Typical faults on Philips sonicare toothbrushes

You can call this a part 2 of the initial repair video with some additional defects and possible repair options for Philips sonicare diamond clean toothbrush and all other sonicare models as they are pretty similar.
Hope I have covered all the questions you guys had in the previous video commented section if no let me know in comments always glad to give a tip if I can ;)
Further more in depth videos on this topic:
Repair of water damaged Philips sonicare toothbrush -
• Repair of water damage...
Opening and repair of the toothbrush that has no vibrations - • Philips Sonicare Diamo...
Other typical faults that this toothbrush can have - • Typical faults on Phil...
Repair for a subscriber, removing PCB from it's casing - • Philips sonicare diamo...
If you have problem removing toothbrush body from the casing this is your video :) - • How to remove Phillips...
If you would like to share some support for the channel or pour a beer as a thank you for successful repair: paypal.me/LetsFixItGarage
These are affiliate links, so if you buy directly from them small amount will be provided for channel support:
Rubber seals that I buy s.click.aliexp...
Rubber seal 1 pc s.click.aliexp...
Rubber seals with end cap s.click.aliexp...
Complete head for replacement s.click.aliexp...
Complete head with new seal type
s.click.aliexp...
If repairing of the water damaged tracks is not your thing you can replace the whole motherboard:
PHILIPS Sonicare diamondclean HX939P HX939W HX939B HX939V HX939L Motherboard s.click.aliexp...
PHILIPS Sonicare diamondclean HX9370 HX9340 HX9350 HX9360 Motherboard s.click.aliexp...
SMD fuses (2A) that I use in my videos s.click.aliexp...
Smaller SMD fuses s.click.aliexp...
Soldering iron set
s.click.aliexp...
Soldering Iron tips
s.click.aliexp...
Screw driver and bits that I use s.click.aliexp...
Screw driver and bits that I would buy now 😊
s.click.aliexp...
s.click.aliexp...

[@CristianAMora]

I had three faulty brushes in my place thanks to your tutorial I made 2 of 3 working and functional again.

[@hingepflanzt8002]

Thanks to your content I was encouraged enough to try repairing it. Turns out the screw of the brush rod was just loose. On the warranty substitute after a few months, wish Sonicare was build more sturdy.

[@letsfixitgarage]

Nice job 👍 yeah the "why it gets loose" is a misstery for me as well.. strange if Philips didn't made some evaluation of this part and it is left unchanged in all the existing models

[@RealMrStoofus]

@@letsfixitgarage Slightly annoyingly I found this video only after I'd bought a new toothbrush, took the old one apart and yep, the brush rod screw was loose - no idea why they don't use some sort of threadlocker on the screw given the amount of vibration it is exposed to.

[@letsfixitgarage]

They use it, but it still gets loose.. well now you will have a spare one ;)

[@jonnymalcs8396]

Thanks for the info. Luckily, I opened mine up and only had to tighten the screw that holds the brush rod in place. I wish they would make the charger more stable on the less expensive versions as that's how mine broke.

[@larrylesueur111]

Hi, have a diamond clean model hx939v. When powered on, "white" and then "sensitive" lite up and stay on for 45 seconds - battery indicator is fully charged/green. Unable to change modes or get to vibrate. It will vibrate if I reset clean learn (hold button down for 2 seconds while in charger). Used very little, all clean. Looking for ideas as this seems like a fixable issue. Thanks! Great video by the way, best I have seen after lots of searching!

[@letsfixitgarage]

do check the other LED's with multimeter in diode mode. it should light up. if no you have burned through LED's. usually if there is problems with motherboard its water damage. and i saw a lot of brushes that looked clean on the top but when you take it off the plastic bracket you see that back side is corroded..

[@a.c.e.repair2173]

Hey, thank you so much for the interesting videos and for showing the typical malfunctions. I have a problem, which does not seem to be typical. I have a sonicare diamondclean 3rd gen. HX9340. It charges and all lights come on, when I press the button. But it does not operate the motor. The Mosfets are ok and I repaired all broken traces on the pcb. When I press the button, for a short time the "clean" led lights up, just as in normal operation. But very quickly the brush returns to the state, where it lights up all leds (just like, when you turn the motor off by pressing the button a second time). Then I found out, that there seems to be en EEPROM on the pcb (label U3). Seems to be an I2C EERPOM, because during startup serial data is transferred from and to the IC. I desoldered the EEPROM. Then the brush did a little more, than before: It stayed in "cleaning-mode", when I pressed the button. But here comes the tricky part: The motor coil is powered by a square wave of 156 us on time and 516 us period. In between there is exactly 100 us dead time. Every 30s the motor is driven by a signal with much lower frequency and becomes audible. I think this is the timer to remind you, that it is time to brush another part of your mouth. Do you know the purpose of the EEPROM? Do you think there might be a way, that we get in touch and exchange a dump of that eeprom contents? I suspect they store the resonant frequency of the torsion shaft inside the eeprom to operate the mechanics at their optimum. Maybe you have a clue....since you have repaired a bunch of those brushes. Would be very nice to hear from you. BTW: Great work! Thank you for sharing so many hints on these brushes. I know how much efford goes into producing videos like those.

[@letsfixitgarage]

Hi thanks for comprehensive description and deep dive in.. I haven't checked so deep to go in to eeprom.. had few cases similar like you describe but usually it was either half dead fuse, half dead MOSFET or half dead trace to the MOSFET. Again I had motherboards that I was unable to repair so I'm not a guru that knows it all, especially newer boards with small MOSFETs suffer much stronger from water damage.. if you would need to contact me, my email is in Chanel description.

[@darkbulb367]

What the hell is going on w/ YouTurd audio???

[@Oracle24Oracletwentyfour]

Hi , just wanted to ask what happens if you damage the ribbon on the led assembly?? Caput?? Or repairable

[@letsfixitgarage]

It's possible to repair ribon cable but you will need fine cables, soldering iron tip and good magnification. Search on KZbin ribon cable repair there will be a lot of examples. If you have a donor toothbrush it's much easier to remove one from donor and apply to your brush. Other options is simply remove it. Toothbrush will work as normal just no lights..

[@petermaier6418]

Hi, my sonicare does not recharge properly. If I put it on the loading port it flickers but the lights dont stay on and it does not load. Is the battery just weak and needs to be repared or what would you recommend there? Thanks for your help!

[@letsfixitgarage]

95% water got inside. Check my other DiamondClean repair videos with water damage to see where problems usually are belut with water it's always individual sometimes only cleaning with isopropyl alcohol is enough sometimes you need to change chips with hot air station..

[@Trevski220]

My brush was working fine last night when I used it and placed it on the charger, but this morning it’s completely dead! No lights or movement, no vibration when placed on the charger, absolutely nothing! Likely to be battery?

[@letsfixitgarage]

More likely water inside. Motherboard restoration will be needed. Try to open it and inspect the damage..

[@sadiporter2966]

do you recommend rinsing the top of the toothbrush to prevent toothpaste from getting in the seal at the top or some other method of stopping toothpaste from getting in?

[@letsfixitgarage]

Best thing that I recommend to everyone whom I repair their toothbrushes is not to let toothpaste to go the handle.. just lift the end of the toothbrush up and it will not go on to the seal or toothbrush itself.. it's a habit so it's difficult to train it if you are used to different holding but I would say is the most effective;) apart from that of course take off the brush head more frequently and clean it. If you have black spots on the seal change it ASAP don't clean it as it will damage it even faster..

[@Kanitokun]

Hello, my Philip sonicare keeps blinking 10 times (all the LEDs) and it won't charge. Any ideas?

[@letsfixitgarage]

Usually blinking is sign of water damage. Have you opened your brush?

[@angeredsmile2]

My problem, I can't get the cap off the bottom to the and get inside. My model slightly different than these.

[@letsfixitgarage]

What kind of model do you have?

[@tanyaya510]

Very bad position of the camera. Can't see any screw, any guidance on what to follow.

[@letsfixitgarage]

Sorry for disappointing you..

[@enwi01]

Hi! Do you know wher can i buy a motherboard for a HX6950?

[@letsfixitgarage]

I think I could have one. Write me an email and we can check. It's in about Chanel section

[@nononono3421]

My 4500 won’t charge, not sure if it’s the charger or toothbrush.

[@letsfixitgarage]

these chargers are quite reliable but everything brakes.. in what state is the upper rubber seal on the brush? if its black or has some buildup I would suggest to open up the brush and inspect the internals for water damage..

[@YvonneAmos-z8y]

Hi my sonlcare toothbrush is not charging but all the lights are flashing

[@letsfixitgarage]

I would sugest water damage. check my other videos on this and if you are familiar with soldering its possible to repair.

[@cpunktspunkt748]

Cool how Philips sells eletrectric toothbrushes that are not waterproof

[@letsfixitgarage]

Well they are water proof just needs some maintenance to keep it waterproof in a long run :)

[@TobiasPatzelt]

What can I do if the Button is Not water proof anymore? Is there a fix for this? Did somebody try to reseal it?

[@letsfixitgarage]

Are you sure water got in through button and not the upper seal?

[@finng745]

These brushes are trash. Mine is in the bin and i’m switching back to manual.

[@letsfixitgarage]

They have their weak spots, that's for sure, but I do not agree that they are trash or that there are some hidden weak spots, planed brake downs. I have repaired brushes for people that had the same brush for 6-8 years and it's still going strong, needed a light fix. And have people bring in the newest models after few months of usage. I would say 70% of defects are dependent on user behaviour. If it's not maintained and taken care off it will break like any other technology.. And don't throw it away.. put it on eBay ;) after these videos they do regain some of their value :))

[@skyteam1418]

Большое спасибо!

[@rahulraj39]

Thanks just Jump started the battery via external charger now its charging lets home we'll update tomorrow

[@SgtScourge]

Are there replacements for the rubber seal around the diamondcare power button? I have it open and I see it looks like it doesn't seal when pressing the button. I had been cleaning it with hydrogen peroxide around the button but I think I ruined the seal with that. I think that and the seal at the top caused water ingress. There was lots of water and condensation inside the brush. The motor looks corroded. The battery has a charge. The light appears when charging, but the brush doesn't turn on anymore. I think I need -new motor replacement -new shaft seal -new PCB? -new power button seal, but I don't know where to find.

[@SgtScourge]

Is there a way to test the connections manually with jumper wires to determine if either the motor or the main control board is the issue?

[@letsfixitgarage]

Check my other videos for water damage repair. Motor will be fine even with rust it works fine. You can find Upper seal and motherboard on AliExpress if you would chose not to repair it after seeing how it is done ;) as it is a difficult job if you don't solder often.. but it is repairable have repaired a lot of water damaged motherboards.. if the casing button leaks water there is no other way as to replace the whole body of the brush.. not sure if AliExpress sells it if not you could buy a defect similar brush on eBay and use it's housing..

[@Сергей8888-ъ2е]

Здравствуйте! Моя зубная щётка Philips sonicare перестала работать, она все время моргает зелёным светодиодом. Когда ее ставишь на зарядку не происходит звук зарядки, но зарядка потихоньку идет 0.07A. При коротком нажатии кнопки не включается. Когда долго нажимаешь кнопку три раза коротко вибрирует шток и три звука разной тональности. Если нажимаешь кнопку долго еще раз то тоже 3 вибрации штока и 3 звука только в обратной тональности. При этом я ощущаю как шток хорошо вибрирует. Щетку еще не разбирал. Подскажите пожалуйста на что обратить внимание при ремонте? Может быть вы сталкивались с такой проблемой. Спасибо большое.

[@Сергей8888-ъ2е]

Сам отвечаю на свой вопрос. В щетку попала вода и на плате появилась начальная стадия коррозии, почистил спиртом и все заработало. Вода попала через резиновое уплотнение штока, резинку на данную модель щетки не нашёл и замазал герметиком, думаю еще поработает.

[@letsfixitgarage]

Thanks for coming back to your initial question. Yes wanted to suggest that it could be water damage after reading your comment. Glad you confirmed it. If it's Sonicare model rubber seals are available on AliExpress or eBay. I have some links in descriptions although they are quite old and I promise to often to renew them 😅 if the brush would die again check my other videos for water damage repair. They can be repaired even after serious corrosion events.. that's why I love them and offer repairs for them in my home country

[@kelsieb9385]

I press the button and it does a small vibration once but doesn’t turn on

[@letsfixitgarage]

Water damage, traces or even a dead MOSFET

[@BertLamb]

Thanks! I was able to fix my toothbrush with this video!

[@ventilator98]

Sometimes, if these things get water inside, they will turn themselves on! I dkid you not! I've done research, and the research I conducted has several cases involving Sonicare Toothbrushes that would turn themselves on and they couldn't really be repaired!

[@letsfixitgarage]

Hi, they can be repaired ;) check my water damaged series. Water got inside micro button and is shorting it. Just clean it (shown in video) or replace the button completely..

[@katiebuaw4654]

i have an old one I can mail you for parts 😊 message me

[@letsfixitgarage]

Even old ones are repairable ;) this is why I like this Philips design they are quite robust. Depends where you are located maybe Something can be organized. [e-mail]

[@atanasescu1]

I can’t manage to take out the magnet, etc out of the case. How do you apply the screw driver to squeeze it out?

[@letsfixitgarage]

There are two latches on the sides of the inner part that hold it. Just move them slightly invards from the outer casing applying slight pressure on the toothbrush as shown in video.. additionally you could use some long tweezers to push both of them at the same time maybe this would be easier..

[@BZValoche]

Been I while. I just discovered your video and was able to fix 3 brushes we had at home, with all 3 having the same problem: electro-magnet touching the magnet. Very easy fix, thanks a bunch.

[@Cinco5meses1enCali]

Hello and thank you for your videos! I managed to repair two toothbrushes (magnets and one defective head) but two are still not working (the whole family was using them haha), unfortunately... The batteries have 3,7 V and the other 4,0 V. The lights do not turn on at all. Several continuity checks are good (switch for example). PCB etc. do not look corrosion damaged. Are there more things I could check?

[@letsfixitgarage]

From experience if it doesn't turn on it's usually water damage.. ruber seal ok? Check my other videos regarding water damage I show what traces usually corode away.. and you could try to take it off from frame usually water damage is seen underneath. Oh and if it really is not damaged by water you could try to disconnected power by removing solder jumper in the lower right edge of the pcb if you hold it vertically.. quite rare but it could be a stuck chip and this power reset helps.. but I would bet on water damage :)

[@Cinco5meses1enCali]

​@@letsfixitgarage Yes, rubber seals are fine... Alright, I will try this power reset tomorrow, thanks! In the other case, would you be interested in giving it a try with one?

[@letsfixitgarage]

@@Cinco5meses1enCalisure it would be interesting to look in to it.. altough they are not 100% fixable had few where exchange of the main chip helped and few where even after that there was no life signs.. and without real schematics at this point is more of a guessing game as real diagnostics :)

[@rtt902]

Just yesterday my brush started turning on by itself. Also, when I put it into the charging glass, it charged but at one point started blinking yellow and green light with one long two short beeps. What can be the cause of this? Water inside? Upcoming bigger malfunction? Besides turning on at random time, it still works fine.

[@letsfixitgarage]

Definitely water inside. Take it apart asap and dry it. If you're lucky maybe it will help, but my guess would be that at least micro button needs replacement.. and of course upper seal needs replacement.

[@rtt902]

@@letsfixitgarage Thanks for the reply! Will try to fix.

[@rtt902]

​@@letsfixitgarage I took it apart and indeed there was water inside and rust and corrosion so evidently it took some time for the brush to malfunction at least in my case. The upper seal had a hole in it. Now, as the brush has dried out and cleaned as much as possible, it does not start anymore by itself and seems to function well. Just need to wait for a new seal to put it back together again. You truly are a Philips Sonicare whisperer :D Thanks a lot!

[@paulaj2829]

i really like the working tray that you have for doing this type of work.. would it be from someone like Ikea.. & also the video is very helpful too..

[@letsfixitgarage]

Particularly this one came as a microscope accessorie but you can find all of these in aliexpress and almost all electronics shops.

[@orcalator]

My Philips Sonic toothbrush just stopped working all of a sudden and i can't even charge it.. led diode is off, no blinking, just dead. Any advice on what to do? Thx.

[@letsfixitgarage]

Check my other water damage videos. It looks like it will be the case with yours as well.

[@orcalator]

@@letsfixitgarage I just opened it and yes, the water got inside - i assume from the bottom, because the bottom electronics is full of green corrosion. Can't do much there so i'll just buy a new one. Thx! Btw. can you recommend one that is a good quality and will last more then this Philips (i have it for 5 years)?

[@letsfixitgarage]

99% of time it's the upper seal not the bottom ;) depending on corrosion and soldering skills it's possible to repair but definitely takes some work..

[@user-ih6oe9ny3j]

Mine doesn't turn on anymore. Maybe when I press the button around 20 times it might turn on, but it seems like the button is faulty? The other button to change modes works flawlessly. Have you seen this issue before? Any recommendations on what to try?

[@letsfixitgarage]

yes in this or other video I show the inside of the button after water damage. it gets quite contaminated. so you need to either clean it or replace the button completely.

[@user-ih6oe9ny3j]

@@letsfixitgarage Do I need to open it up and clean it? Or do I just use a tissue? I already tried with a tissue

[@letsfixitgarage]

Contamination is inside of the button. So you need to open it up. And you need some good magnification and small tools to see what are you doing.. if you don't have those tools but are used to work with soldering iron I would recommend to exchange it. Cleaning is not that easy.. additionally just to check if it's really contamination try shorting button legs with tweezers. It should turn on and change modes easily if not problem is in damaged PCB traces.

[@manongjoseph]

Hello! Some of the LED lights in my hx9340 is not lighting up. How to repair? Thank you!

[@letsfixitgarage]

Sometimes the LEDs burn through. Only way to fix it is to replace them. Check with multimeter in Diode Mode first. If Diode ok it should light up slightly. If led is ok then check trace condition.

[@manongjoseph]

@@letsfixitgarage wow thank you! Btw is there a link for the led light info? Thank you in advance

[@letsfixitgarage]

Sorry haven't looked for them. I have a lot of donor boards so when needed I just use those..

[@Jamal.Nouman]

Hi, My toothbrush is not working at all and when I measured the voltage of the bettery after opening the toothbrush it indicated 1.5 V. I wonder if this voltage is too low and if my toothbrush needs a new battery?

[@letsfixitgarage]

Yes this voltage is to low. Li Ion cell is considered empty at 3v. Don't rush with new battery, this same cell can be revived by charging it up to 3v. But first I believe it will have water damage. Check my other videos with water damage. And see if you have the tools for this kind off repair..

[@Jamal.Nouman]

@@letsfixitgarage thank you for a qick answer. Now I have watched the follwoing video of yours: kzbin.info/www/bejne/rpXEiWambdWjqZo When I check the continuity so it is pretty same as the board you are cheking. It seems that the points next to the left Integrated Circuit has broken connections.

[@letsfixitgarage]

Nice. Now try to repair the traces, charge up the Battery and it will work just fine. Oh and of course you will need a new rubber seal as that's where the water came in..

[@lukaskantner6389]

realy nice think for this videos so helpfull and symatic

[@Lee90000]

Phillips hates this video.

[@letsfixitgarage]

Haha could be ;) although if the right to repair comes in play and there will be some repairability scores I think they could use information from this channel and especially the comments how easy it is repairable ;)

[@minusseph]

hello, can you tell me the description of the battery so that I can replace it

[@letsfixitgarage]

You can find the battery by length and diameter measurement. But does it really need replacement? Usually if it's deep discharged you can charge the Battery up to the 3-3.6v with an external power supply. If your toothbrush is dead check my other videos with water damage. Usually problem is deeper in pcm of the toothbrush..

[@minusseph]

@@letsfixitgarage I opened the brush and it had rust inside but the plate is in good condition. Hope it's just battery damage.

[@letsfixitgarage]

Hope is a bad word in fixing ;) what voltage is the battery? Does it charge to 3v and stay or drop the voltage? From my experience 99% of times battery is fine. Water damage is usually much stronger under PCB not top. Check my other videos it has test points that need to have continuity. And usually are damaged by water.

[@ericcollignon2299]

Thank you for sharing!

[@cedric1760]

In case the battery is fully charged (measured by multimeter) but toothbrush doesn't turn on and vibrates 3 times to signal that battery should be charged. What you can do is cleaning battery connectors with contact spray. Then if still not working you can also reset the toothbrush by pluging the charger and put toothbrush on it then press power button for 2s with thé following sequence going : 1 beep 2 beeps 3 beeps then release and you should hear a melody. For me it fixed my issue after cleaning + resetting my sonycare. PS : huge thanks to the owner of this channel for the content quality.

[@letsfixitgarage]

holding power button on the charger has other settings like activating //deactivating pressure sensor or cleaning head replacement indication.. not sure if there is a "reset" by pressing the button.. and for the contact cleaning.. battery is spot welded and other side is soldered it.. it shouldnt affect the toothbrush unless the leg has coroded away from the battery in that case it needs to get rewelded.. cleaning with alcohol is good but if you had water damage you need to dissasemble it completelly inspect for damage on the backside of the motherboard inspect the battery terminals and of course replace the rubber seal.. or the problem will return..

[@tom2point0]

The head on mine is loose and the screw is tightened all the way. There is also a thin wire that goes from the main inside body up and wrapped around the head part. Any ideas?

[@letsfixitgarage]

Yes :) you need the whole head as spare part. If you loosen the screw you will find that this part is broken. As for the wire there are two options. one is to desolder the wires other one is to loosen plastic ring and remove the head with the ring. It is somehow difficult to explain.. planing on doing a video on this as well..

[@tom2point0]

@@letsfixitgarage ok cool thanks! I’m not knowledgeable about soldering. For that second option… From what I read, that wire is for pressure sensing so the brush can change the pressure? If i don’t solder that wire, the brush will say least still vibrate, right? Like the older, non pressure sensing models?

[@letsfixitgarage]

No these wires are to read sensor on the brush head. So the brush knows when you replaced the brush. It should work without it as well although I haven't tried it. Pressure sensor is next to the magnet, glued to the metal electromagnet frame

[@tom2point0]

@@letsfixitgarage ahhh ok. Yeah my wife replaces the heads for me because I always forget to! So I may not really need the wire then. If I can just find the part, I can probably just swap that head assembly then easily. But I’ll still probably wait until I see your video on loosening the plastic ring. Thanks for the info!

[@Chris-on8lw]

Thanks for the video. I had the issue with the vibration already with one toothbrush. Now I had another one where the battery seemed to be broken and I changed it. Now when i place it in the loading station the battery LED is blinking (-> so it should be loading). When i then remove it from the loading station all lights are on for ~30sec and then go out again. Unfortunately it is not possible to turn on the toothbrush. No reaction no matter how long I press the button. Do you have any idea what might be the issue?

[@letsfixitgarage]

Check my videos for water damage repairs answer what to test is there

[@harwoods11]

My toothbrush, when pressing the button appears to light (faintly) all the leds at the same time but won't turn on. I dismantled the device and found the battery fully charged at 3.8v. Any idea what could be wrong? The top rubber seal is good and no rust or corrosion on pcb.

[@letsfixitgarage]

Could be that one of the MOSFETs has a short.

[@pinjiz]

Hello sir, I had a faulty head and screwed it back up. The tootbrush worked before dissasembly and now it wont charge. It was left unused for a while but It was working after opening but it refuses to charge despite blinking charge. Now I tried again and all LED are on after a moment on the charger

[@letsfixitgarage]

Some PCB element could have gotten damaged in the process.. check it with good magnification.. try to charge battery externaly and see if the brush is working. And then try to charge it. Eliminate faults one at a time..

[@NLDHBREUER]

Hi there! Great review! You've just mentioned all possible problems and the possible workarounds with the Phillips Sonicare. I've had these brushes since a long time but keep on getting these defects. Main problem is decontamination with toothpaste as you mentioned. Hope Phillips can improve these water seals in the future.

[@letsfixitgarage]

thanks for your feedback! In the mean time I have updated it with water damage repair possibilities so now it's 95% of cases that can be fixed kzbin.info/www/bejne/rHSQhX5_rL6WmKs.. but yes as you said contamination of the toothpaste on rubber seal is the main and the most difficult defect.. Philips has a new type of rubber seal it's still quite new to have data will it hold up but it is quite promising, till this date I had only one brush that had water damage with the new seal..

[@belladea981]

I’m struggling to open my toothbrush up. Please can you advise on how to open it? It won’t stop vibrating.

[@letsfixitgarage]

To open it up this video describes it best: kzbin.info/www/bejne/pWSzc4OLZ8-LmNE to take it out from case: kzbin.info/www/bejne/pX65kmlqhpZmfqM and it seams you have water damage so check this one kzbin.info/www/bejne/rHSQhX5_rL6WmKs especially water damage part..

[@medycznyklefedron]

hi if the voltage is 3.8v is the battery problem?

[@letsfixitgarage]

3.8 is still normal charge. But depends on the situation if this is the state after charging then you need to check charging circuit. As fully charged should be around 4-4.1v

[@medycznyklefedron]

@@letsfixitgarage oh okay, it seems to be shorted somewhere. when i press button it barely light all diodes, and wont turn on. i separated magnet with motor and still nothing happens. Should i change battery?

[@letsfixitgarage]

If you had water inside there could be either damaged traces or shorted components. Two different states but same result. You need to take off the motherboard from its frame find the defect and repair it. Don't think battery exchange will help usually they hold pretty good and problems are usually in the motherboard.

[@medycznyklefedron]

@@letsfixitgarage i saw some rust on top of the magnet , motherboard was clear, any dry solder there. Thanks for help i really appreciate it

[@letsfixitgarage]

Check my other video where I show water damage repair. Sometimes toothbrush looks as new but there is a lot of damage on the back side or only inside of the on/off button.. visual inspection will not help you need to test it with multimeter.

[@michaelshagam3354]

I Think my battery is fully discharged from water damage. Which 2 points do I probe with a multimeter to check the voltage? The 2 big thru hole soldered leads next to F1 and R7? Thanks in advance!

[@letsfixitgarage]

Next to the F1 you have a positive battery point and next to the R6 the negative. Next to the R7 is the charging coil pins. But if you had water inside take off the whole board to inspect the bottom part. Majority of water damage is usually on the bottom side.

[@toxa20074]

Hi. Where can I buy a top sealing for this toothbrush. I live in Ukraine. Accept any suggestions. Thanks.

[@letsfixitgarage]

Ebay and aliexpress as usual :)

[@lorenzobertelli138]

Hello, My Sonicare diamond clean HX9312 is not charging. I’ve finally discover that on the PCB board the component named Q3 is missing in the board. Nobody know the type of SDM component labelled Q3? Any information can really help! Thanks

[@letsfixitgarage]

Can't imagine how a component could disappear but under microscope I see only writing 35 with a dot between them but a little bit lower.. and then one more letter or digit that is random on all of the boards.. so for now not much help..

[@robertkrause997]

Lights are working and buzzing sounds are evident, but no vibration at toothbrush post. Ordered complete new upper assembly and reassembled. Even created more spacing at magnetic gap and still no success. Any other thoughts?

[@letsfixitgarage]

Maybe one of the MOSFETs is dead..

[@adpkrs]

My Sonicare brush charges fine, and Mode switch works fine (LED lights up and switch to different mode) , however on/off doesn't work. I checked and electro magnet is not stuck. next I suspected SMB ON/OFF switch, so used a copper string and touched the switch's diagonal corners and Brush turned ON and when I touched again it turned OFF. So, now I know it is the SMB ON/OFF switch, but not sure how to repair it or replace it. Any advice? Thank you..

[@letsfixitgarage]

yes it seams you identified the origin of the defect. good job! I assume it will be possible with simple soldering iron and low temp solder or hot air station. Right now I'm working on a video for water damaged toothbrushes so button replacement should be there to...

[@omerfar]

You are a life saver 🛟

[@travisyockel2293]

Hello. I've had my diamond clean 9700 for a month now and when I attach any brush head, the handle isn't selecting the proper brushing mode. Instead it will select other modes. Any possible reasons why this may be happening?

[@letsfixitgarage]

Well new brush heads have a chip with preset cleaning mode. But after you attach it you can change any mode you want..

[@kevinseok6916]

where do you get the replacement batteries? phillips website says there is NO replacement....

[@letsfixitgarage]

original no, but you can find sites selling replacement batteries that are as good as original. but before you buy it, do take it apart. it could be not battery problem but water damage inside. for repair of these defects you can check my other videos.

[@Roadsurfer2k11]

I took my diamondclean apart and water got inside. No led light, it looks like 2 round pads near led are gone. This was a week after new battery replacement. Took it apart and cleaned. Checked traces and fuse and continuity is good. I wrapped new coil wire to board, cutting out corroded part. Battery voltage was 1 to 2 volts charge and then dropping volts. I only have an nimh / ni-cad charger used for expensive rc cars where I can custom set charges, but this battery is a lith ion.

[@letsfixitgarage]

It's difficult to comment on water damage repairs but for voltage this is a Li-ion cell thats voltage range is 3.6-4.2v. so your cell is quite drained and if you say that it was just changed that means that you have a short on the board. You can locate it by connecting a charged battery and then touch around the and chips and feel which one heats up.. and you could charge the battery with a bench power supply 4v 0.2-0.5a but do check when you charge if the battery doesn't get hot..

[@highigartuat5011]

if you have a toothbrush with a tape cable, it just comes off (it's glued on)

[@letsfixitgarage]

Yes you need to take it off carefully before attempting to remove the magnet from the bracket. Additionaly there are brushes with RFID coil for the brushes these are even more tricky.. maybe a new video with these needs to be done..

[@alejandrojrjovellar3411]

My coil at the bottom for the charger got unwound a bit would that cause it to stop charging?

[@letsfixitgarage]

Question would be why it unwounded.. if it was damaged on disassembly then it could be problematic.. the wire is coat protected if you scratch it, it can short and not charge properly..

[@ahmedjumaah1922]

hello plz help me, i have sonicare smart tooth brush and now i can not connect my phone with it ! what is problem and how can we fix it?

[@letsfixitgarage]

Sorry but it's still quite new so haven't had a lot of them and never had problems with connectivity..

[@Simon-pl2zi]

mine stopped working, I pulled it apart, and the internals were literally covered in goo and caked toothpaste. I literally rinsed the internals under luke warm water, used a blow dryer to dry the internals. Then let it sit to dry for an hour, put it back together - put it on the charger and now it works like new again!

[@letsfixitgarage]

It's possible, but if it will stop working again check the button with multimeter for continuity - quite often inside gets covered with water and build up.. and pcb traces can corode if they were affected with water for long time.. just a tip for future ;)

[@piotrgrzybowski5386]

Thanks for the video. Which MOSFETs do you use when they are faulty and you want to replace them?

[@letsfixitgarage]

I have a lot of donor boards for MOSFETs and LEDs or even main chips ;)

[@heisterreinsch6251]

what i can do to prevent that kind of water damage? i lost already two of my sonicares due to water damage: i got this random turn on off things at night, really spooky. that is annoying.

[@letsfixitgarage]

If it turns on off randomly it means that water is already inside the button. You need to disassembly it and replace or clean insides of the micro button. (I have a video on that) and to prevent it just pay close attention to the upper seal don't let it get contaminated by the toothpaste.. if you see some build up replace the rubber seal before it breaks..

[@mkgamesartvisuals]

Wow, you rescued my toothbrush - thanks a lot!

[@letsfixitgarage]

Glad it was helpful! share the knowledge ;)

[@maxlup83]

Great tutorial 👍 Thank you.

[@davidkhd]

Hello! I’d like to fix mine, do you think it’s possible to send the one to you? BR

[@letsfixitgarage]

It depends where are you located. Write me: [e-mail] we will figure something out ;)

[@hnt_in_germany6415]

hallo can u repair my toothbrush ? I can not get it working

[@letsfixitgarage]

Hi what are the problems? And what did you aleady tried?

[@paullangerock7025]

Hi there ! I was amazed by the impressive tutorial ! Unfortunately I'm desperate ... I cant get my toothbrush fixed. After measuring the tension of my battery, I discovered that the tension was going below 1V and that the brush was dead. I measured the battery on the pins of the electronical board and the tension was close to 0V. I took the battery off and measured it again. The tension seemed to increase again... Then I bought a new battery with around 4V of tension. I reinstalled it and it worked for half an hour. Then I discovered that the case was warming up. After 2 hours I discovered that the brand new battery tension was close to O again... I dont know what to do to fix the toothbrush :-((((( Can anyone help me to fix it? I have just one explanation : I used once a wrong faulty charger from samsung (2A) and after one night charging I discovered that the brush was dead. I thought that the faulty charger just killed the battery but with the new battery It's the same story. It works half an hour then the battery heats up is emptying itself quickly and the below minimum tension and the toothbrush is dead.... I just discovered that the + terminal is shortcutted with the - terminal ! How can it be? That's the reason why the battery heats up ! What's the solution? Many thanks in advance

[@letsfixitgarage]

It seams you have a short somewhere on the PCB of the toothbrush. My suggestion would be to take it apart completely so you would have only PCB in the hands then clean it with isopropyl alcohol from both sides. Check if there is nothing between component legs. Then charge the battery externally to full capacity and reapply to the PCB. Then check if something heats up, maybe the cleaning will help if not check what heats up (just poke around with fingers) and if you will find something exchange it..

[@MrGr8golf]

I've been watching your vids on sonicare toothbrush repair. I have a toothbrush that the head screw was loose causing a rattle. Based on your teachings, I took it apart and tightened the screw. I put it back together, but now, nothing works. The clean and battery lights flicker rapidly when placed on the charger but the unit will not run. It's very clean inside and dry. The lights do not light at all off the charger. Have you seen this fault and do you have a suggestion on how to troubleshoot and repair? Thanks.

[@letsfixitgarage]

its difficult to diagnose electronic defects remotely.. maybe you shorted something when you were fixing the loose head screw.. I would try to remove the power to the brush by desoldering the battery or safety bridge on the bottom of the motherboard (i show where it is in some of the videos..) if this doesn't help need to check on component level: fuse, battery, button, components under load maybe something is heating up,

[@MrGr8golf]

Thank you for your quick response. @@letsfixitgarage

[@MrXaresx]

how many amp of p fuse? why is it broken if brush s new...

[@letsfixitgarage]

I install 2a fuse. Here in comments you can find real consumption, someone measured, the motor consumption 250ma free run 500ma when on load. If I recall correctly. Second part of the question is for Braun ;)

[@MrXaresx]

@@letsfixitgarage i meant my brush sonic ..it s not used but fuse was blown... is it blown forgetten in charge or what may reason...there s no leaking inside ...

[@letsfixitgarage]

Sorry haven't noticed under what video this comment was. Braun has an issue with fuses, sonicare are usually reliable.. where did you bought it? If it's new I would return it for warranty.. maybe there was some mechanical damage to the brush that got a micro crack on the fuse or manufacturing defect. Difficult to say. But if the brush functions after replacement of the fuse wouldn't think to much about it..

[@MrXaresx]

@@letsfixitgarage i find it inside amazon return boxes... philips wanted replace but i rejected bc of not fair i paid just 7$... it was not charging all lights were blinking inside travel box and not worked.. battery was 3.5v i read battery s 3.7v capacity..i coulnt get why not working bc 3.5v is good i throught ..i gived few sec. external 3.7v then it ddnt worked .. few days i made some tortures on it by made shorts .. i coulnt find problem then yesterday i saw p fuse ..when i checked bumm it s broken i made short then battery started charge ... if i can find an p 2a fuse i will change it and try my chance... brush itself not important i just dnt like anything around me broken i have may ne 5 6 set expencive brushes...for sale..do u know where can i buy tht fuse..

[@letsfixitgarage]

Well because it's a return it's difficult to say what happened why the fuse failed.. but yes just replace the fuse and it will be as good as new. I really like these brushes for their repairability. I have a link in video description for the fuses, they are not exactly the same in size, but it fits and does its job ;)

[@Yooshroom]

Thanks. Had "stuck button" problem. Dissasemebeld, cleaned a few times with brushes, spikes, and other methods... All good for now :D HVALA! :)

[@letsfixitgarage]

Spikes are kind of extreme :)) just put the case underwater, let it sit and then underwater press few times the button and you will see all the "nice" stuff wash out..

[@Yooshroom]

@@letsfixitgarage plastik iFixit spike thingy :) works nice, checked if it leaks, seems to be good inside

[@marekkowalski3814]

Hello everyone, What model of sonic toothbrush do you recommend from your website ?

[@letsfixitgarage]

I don't have any website only sell some through ebay. It strongly depends what you need.. even the cheapest one mode toothbrush will have the same power unit that prestige is using.. so cleaning performance will be very similar.. I would look for a brush that has pressure sensor and new type seal on top.. all the other things are to personal ;)

[@marekkowalski3814]

@@letsfixitgarage Can you advise which toothbrush has a pressure sensor and a new type of seal on the top?

[@letsfixitgarage]

@marekkowalski3814 I believe almost any new toothbrush on the market.. even the cheapest sonicare has the pressure sensor and type of seal you can check visually..

[@marekkowalski3814]

@@letsfixitgarage I know that new sonic toothbrushes have a pressure sensor.

[@marekkowalski3814]

@@letsfixitgarage But how to distinguish the new type of gasket from the old type of gasket, I just don't know which type of gasket is new and which is old.

[@victoriadunnett4745]

Mine is charging..but making high pitched squeal and no vibration at all! The metal part the brush head sits on is rusting....only just two years old and I clean it....any ideas?

[@letsfixitgarage]

Rust indicates water that got inside. But rust doesn't kill this toothbrush it can work with it. You should clean any loose rust in the gap between magnet and electromagnet if there is some debris this could be the noise source. And do check pcb of the toothbrush. As there could be damage that will make the toothbrush unusable. Especially on the back side..and do exchange the upper seal even if it looks ok..

[@victoriadunnett4745]

@@letsfixitgarage thank you!

[@branislavbalis3759]

Many thanks for your help!!

[@letsfixitgarage]

Glad it was helpful! If possible share it with others it's really quite easy to repair it and not just throw away..

[@superitas]

Hello :). Where are you based? I would send my brush to fix it :) Are you in Vilnius for real as it is written in your ABOUT section?

[@letsfixitgarage]

For real ;) write me an email and we can arange something :) [e-mail]

[@matthewh.]

Good video. I am trying to separate the Pcb portion to get to the screw on the electromagnet at 3:50. Tried force and still can't get it to come apart. It seems mine is really stuck on there.

[@letsfixitgarage]

@matthewh. If you have simple diamondclean then just pull them apart there are two plastic leavers nothing more and even if you break them it will hold in place if you have any toothbrush with brushing head identification coil on top and pressure sensor glued to the electromagnet you need to be careful or you will tear the wires off. Check my other videos I show it on camera few more times :)

[@matthewh.]

Thanks man. I eventually got it to come apart. I thought maybe it would work again using a shim to space the magnet. No luck. I think I'll just order a new one. It was fun to take it apart. :) @@letsfixitgarage

[@snehatibrewal]

How do you remove the back shiny lid from the main body of the toothbrush ?

[@letsfixitgarage]

Hi check my other video, link in description, it has a full opening process

[@briandominico6244]

my soniccare diamond brush button does not work ? i have taken apart and charged it for 24 hours its fully charged (light all work and show charged ect..)but when i press the button it does nothing i press the button when taken apart still nothing ... what could it be what can i do? i feel the vibration and everything is fine just the button is not activating the toothbrush (feel like the button has somehow become faulty)

[@letsfixitgarage]

How do you feel the vibrations if the button does not work? And you can check if the button is faulty by shorting out the 2 pins on the button. If it turns on then the button is faulty and should be replaced... you can see me shorting the butto in the end of "repair of a sonicare for a subscriber" video

[@briandominico6244]

@@letsfixitgarage if the light turn on and the battery charges and indicates charge could the pcb still be faulty also i have tried shorting and didnt work do u have facebook or anyway to chat ?

[@jessicalints2496]

Hi there, the handle lights up when being charged but when I remove it from the charger and press the button nothing happens and the lights do not go on. The button does not appear to be stuck - any advice? Thanks!

[@letsfixitgarage]

Check the rubber seal if its contaminated - 100% water damage. From my experience usualy it's water damage, inside was affected only partly so it charges but it is not turning on.. it could be the button but that can be checked only by opening it up.

[@reneacevedo2628]

can i send you my toothbrush to fix

[@letsfixitgarage]

write me an email. mine is in the channel description.

[@georgenschede8844]

Danke nach dem 5.Video habe ich gesehen bei dir wie man den abstand des Magneten zur Spule verändert super Beitrag habe mir bereits eine neue gleichen Typs bestellt weil ich keine Möglichkeit sah. Nochmals Danke für den Tipp

[@letsfixitgarage]

Gerne! Hoffe die alte wird noch ein zweites Leben möglichkeit kriegen ;)

[@josephnealescratchcards]

❤️👍

[@GasSquadUk]

Hi great video , the metalic coating on the bottom of the brush unit has nearly all peeled away and the brush wont charge , if i replace the bottom cap will it charge again . Thank you

[@letsfixitgarage]

sorry to say this but the cap doesn't affect charging. in what condition is the upper seal?.. I would suspect water leak through upper seal.. but to make sure you need to take it apart and inspect it from inside..

[@cranebeg]

I now have 2 with issues. On 1 there is some vibration but you press it against your teeth and there is no power even on "Deep clean" setting. No loose screw or anything broken at the top (did unscrew the top piece and check) + coil to magnet looks to have the right spacing? I would say it feels like it has lost rigidity as well as power. However, fiddling with it I've now broken the wires to the pcb :( 3:45 It came apart much better when you separated it here, definitely harder for me. I've ordered some basic soldering equipment so hopefully should be able to reconnect those. The second toothbrush works fine but only gives one or maybe 2 cycles of brushing after many hours of charging but still have more hope for that 1. I might just switch the battery over if nothing can be done about the 1st. I haven't removed this second from its casing yet but it does have a different design of seal at the top (newer version?), less material in fact, it's slightly dome shaped. Perhaps Philips recognised water damage was a problem although I can say the condition of mine (brush 1) is good, would always wipe with tissue after use. Any advice you have about these problems would be appreciated, thank you.

[@letsfixitgarage]

I would suggest the opposite. Take the electromagnet part from number 2 and solder it on nr 1 electronics. It seams that you have a defect electromagnet unit on nr1. They are not fault proof. And sometimes internally something brakes and the axis is either broken or fixation doesn't hold it in place.. sadly it is spot welded so no chance to repair it.. as for the second I would suspect water damage and motherboard failure. But as long it is partly working it's difficult to diagnose...

[@cranebeg]

@@letsfixitgarage Thank you for replying. When my soldering equipment arrives I'll have some fun with mix and match to hopefully create a working one :) I have a hunch though it's like you say inside the welded area. Last resort I will open that up just to see. I did a much better job of opening the bottom of nr 2 today, no damage at all this time, it even popped out for me ;) used the pointy ends of a few cable ties. No obvious water damage I'm pleased to say but time will tell. Thanks for your helpful suggestions, I'll follow up with my findings.

[@letsfixitgarage]

With water is tricky sometimes it's all in water, rusty and the motherboard still works. Sometime the brush is dead you take off the motherboard and there is a lot of water damage on the back side :) nice job with the second one! With practice it gets very easy ;) no wonder that broken ones are selling on eBay for much better price as few years ago :)))

[@adpkrs]

My brush will charge fine, program button works fine, LEDs switch over but when I press power button nothing happens, Any ideas what might be the issue.

[@letsfixitgarage]

first thing that comes to mind is you have a magnet that is stuck to the electromagnet, this is your video: kzbin.info/www/bejne/pWSzc4OLZ8-LmNE :)

[@adpkrs]

Thank you for the reply. I check and electro magnet is not stuck. next suspected SMB ON/OFF switch, so used a copper string and touched the switch corners and it turned on and when I touched again it turned off. So, now I know it is the SMB switch, but not sure how to repair it or replace it. Any advice? Thank you.

[@letsfixitgarage]

Some how didn't got notification that you answered to my message.. in the mean time I made another video about water damaged sonicares check it out it could be usefull to you. sometimes it's not the button but a trace on pcb. And you can jump wire it, I showed it in the new video.. it's possible to replace the button aswell but it's quite delicate work.. microscope is a huge help..

[@hmj8469]

I'm getting ready to buy another sonicare, but on the off chance my problem is fixable here's what's wrong: I fully charge the toothbrush and it is on 'clean' mode. While brushing my teeth I don't have to push against my teeth very hard and the brush head stops vibrating against my teeth. The toothbrush itself is still making noise but the brush head is just sitting on my teeth and not vibrating.

[@letsfixitgarage]

It sounds like typical no gap between magnet and electromagnet.. have checked it?

[@hmj8469]

@@letsfixitgarage no, does your video explain how?

[@letsfixitgarage]

This video explains it quite good kzbin.info/www/bejne/pWSzc4OLZ8-LmNE

[@saintalucard]

Hello, I dropped my brand new Diamondclean 9000 on his metal head. It vibrates but the power button has to be pressed with very strong force for it to start (it was never used before, so it's not dirty). Also the metal head is very slightly bent to the front side but it's not loose at all. What could be the problem? I'm asking before trying to disassemble it. Thank you for the video.

[@letsfixitgarage]

Difficult to say..this is counterintuitive.. usually hard press is a contaminated housing button or pcb button symptom and after dropping usually you lose vibrations.. you will need to take it apart to see what is wrong with it.. and metal head by default is bend to front so it's not a symptom. And vibrations are strong as before?

[@saintalucard]

​@@letsfixitgarage At last, I managed to fix the toothbrush following your videos, they were of great utility! The problem was that magnet and electromagnet were half in contact (obliquely) after the fall, so all the structure was oblique and the power button had difficulty to reach the actual button on the board. I followed your method and used plastic from a plastic bottle :D to make a new gap between the magnet and the electomagnet. The hard part for me was to disassemble everything in the first place, the hardest was to separate the board from the electromagnets (I broke some plastic teeths in the process but it was not a problem at last). Thank you so much!

[@letsfixitgarage]

@@saintalucard thanks for getting back with your solution! Yes usually it's the magnet stuck with electromagnet glad these videos helped you out :) and you are right, don't worry about the plastic holders, they are not important in final assembly..

[@doxdubsox]

Thank you so very much for your most helpful repair tips videos. I have been able to repair a dropped toothbrush by separating the magnet parts as you demonstrated. Most excellent

[@letsfixitgarage]

Thank you for your feedback and glad you got it working 🙂

[@kitakita1804]

The metal shaft of my toothbrush looks like it was burnt what would make that happen?

[@letsfixitgarage]

now that's something I haven't saw :)) where exactly are the burn marks?

[@kitakita1804]

@@letsfixitgarage on the metal tip part can I email you pictures?

[@letsfixitgarage]

@@kitakita1804 maybe first try to take it apart to see whats inside then lets try to figure out whats going on there..

[@MrSir2egk]

Mine will drop down to magnet once I space it out and screw it in as you mentioned. Anywhere I can find used parts? Don’t want to buy a new one.

[@letsfixitgarage]

As described in video usualy this means that the shaft between magnet and head is broken you need to replace the whole electromagnetic unit head. Just buy a defect one from Ebay it will cost less than a spare part ;)

[@MrSir2egk]

Thanks for the reply. The video was very informative

[@nsashan]

Hello! Thank you for your videos! I tried to repair my toothbrush HX6320 (very slow vibrations). Mosfets is alive. But i can't find any information about IC B1CQ (marking U2, sot23-5). Can You help?

[@letsfixitgarage]

I don't have any schematic either.. what I do is I take the components from other defect boards. Because some specific IC are more expensive stand alone as the whole defect toothbrush..

[@nsashan]

@@letsfixitgarage I defined this item as a I2C serial EEPROM 24AA01/24LC01B. However, I don't have a working chip to take the memory dump. If Нou could read it and put it on a file server that would be great. it will be a rewarding experience.

[@letsfixitgarage]

Sorry don't have reading equipment.. But what would be the intention? Want to modify the code? What do you want to improv?

[@nsashan]

@@letsfixitgarage I just want to fix it. Now the vibration motor operates at a frequency of 2 kHz instead of 200 Hz. I assume that the memory chip also stores operating frequencies (or prescaler). The memory may have been damaged as a result of a power outage, so it needs to be written.

[@letsfixitgarage]

@@nsashan that's a strong approach.. as said sorry I don't have gear to read the memory of the chip.. and never tried to reflash it, usually the problems were in the hardware although sure I had some boards that I was not able to rescurect.. I would look for a donor board to exchange the whole chip..

[@19mati67]

Excellent video!!! What is the correct spacing at the electromagnet? I'm keep adjusting the spacing, but it seems like no matter how I adjust it, the vibration power does not change. Did you say credit card is the correct thickness? Hi from Los Angeles.

[@letsfixitgarage]

yes something like a credit card. after you make the gap and remove the spacer does the gap stay there or does the magnet snap back to the electromagnet?

[@19mati67]

It stays there.

[@letsfixitgarage]

@@19mati67 hmm difficult to say.. one thing that I could think off is if the magnet is sideways.. try to inspect if metal "ears" where magnet is attached should have the same spacing on both sides.. anyways you could try to replace the whole electromagnet as this defect that I described is not repairable..

[@19mati67]

@@letsfixitgarage I have to inspect the electromagnets. I was setting the gap for only one electromagnet, maybe the other one had a different gap. Thanks

[@letsfixitgarage]

No the gap gets set at the same time for both sides of electromagnet. But you should inspect how the magnet stays to the electromagnet sideways. If it's not straight then the whole electromagnetic drive needs to be replaced.. it's not repairable. sorry but it's quite difficult to explain..

[@ralfbeer8826]

Gibt es kein Ersatzteil von dem "V-Stück", das du bei 13:37 angesprochen hast ? Ist bei mir leider gebrochen.

[@letsfixitgarage]

Hi, ist einfacher ein defektes Gerät bei eBay zu kaufen und komplettes Antrieb auszutauschen... Auch wenn das Teil als Ersatzteil gebe wäre es zu schwierig es auszutauschen..

[@ralfbeer8826]

@@letsfixitgarage Okay, danke dir für deine sehr schnelle Antwort :) Super Video :)

[@calvinschmidt2903]

Gutes Video aber du sagst so oft ehh 😬

[@letsfixitgarage]

Sprechen oder erklären ist nicht meine Stärkere Seite.. und man sieht es :D

[@daibhidgray]

Hi, thanks very much for your very helpful tutorial, I have repaired my brush, however, it will not charge when I reinsert the base cap? it charges when it is off, and close to the base of the charger, but not when the base cap is put back on? Any suggestions?

[@letsfixitgarage]

Thats a new one.. havent had this one.. what was the initial problem with it? Maybe the charging coil or it's connection points were damaged when you were taiking it apart? Check for some loose points that could be resoldered..

[@daibhidgray]

@@letsfixitgarage Hi, will do, it charges when out of the case. I will review it again and let you know how I get on... many thanks

[@trollme.trollmehard.9524]

Hey, thanks for this video. My concern was answered ~10:45 where (after 10 years never dropping it) I've dropped mine 4x in a couple weeks. From your description, it looks like it's a snapped / unrepairable head, which helps me plan. Thank you!

[@letsfixitgarage]

I would try to open it up first. If it was dropped it could be that it snapped but it could be a lose screw.. if you can't use it then why not open it up maybe you will not need to wait for a new part :) just a suggestion ;) and thanks for commenting!

[@trollme.trollmehard.9524]

@@letsfixitgarage You were right. The magnet gap was closed, but everything else was spotless. The head's still very wiggly (I thought it was stiffer before) but re-gapping has it working. *Note* I don't think I have clips inside, seems a fatter plastic tab slides into a metal slot. Maybe an early design (~2009)? It all looks about the same to me _(personally was surprised to see RS-232 pads!)_ but happy to send pictures of insides if it's useful to you.

[@letsfixitgarage]

Sure send it to [e-mail]. if head is wiggly it can be retightened as well. If the screw is tight it could be that the whole electromagnet unit got damaged. Sadly this needs to be replaced, no way to repair it as housing is spot welded..

[@YetAnotherUser0815]

These videos are very helpful. I have a short question: It seems like there is no suspension/flexibility below the head part. BUT: I just got my new sonicare smart and I was wondering about the gap between the brush and the device (there is a 1-2mm gap). So it seems like this is normal but I was pushing down the brush a bit forcefully. There was some kind of pushback when I pressed the brush down. Is this expected behaviour of the device or was I just about to break it? Not sure if I was just lucky or if this is by design. Because also when you exchange the brushes, sometimes pushing the brush down is also touching the device and then it pushes back so that there is this gap. I was just wondering how this is implemented/designed inside the device. I would have expected a suspension/spring kind of construction but it seems like there is nothing like that?

[@letsfixitgarage]

thanks. The gap is needed when you apply pressure on your teeth, the brush head flexes side ways, and this flex is designed. This is the main purpose of the gap so that brush head wouldn't touch the base of the toothbrush. Of course toothbrush takes some abuse, but I would say you were lucky :) it's not designed to have any flex in other direction and usually if you drop it on the head it can be damaged in several ways some are repairable as in my videos explained some need part replacements as they brake..

[@YetAnotherUser0815]

@@letsfixitgarage I actually think now after watching more videos that I did not push the head down, but the whole upper part above the battery. There is a spring much more below (see here kzbin.info/www/bejne/eHOUq6msg7eIm80 or more clear here kzbin.info/www/bejne/jJy1hIpjnZmNY7M). So I think there is some mechanism that allows to push the whole upper part up and down a tiny little bit (but it moves everything including magnet except battery).

[@letsfixitgarage]

If you are talking about a spring between battery and electromagnet then my impressio that it's purpose is to apply conatant pressure to the upper seal so it wouldn't leak water and not for other purposes :) but you are right it will give in a little bit.. but if you press to hard the two screws will give in and you will have to repair the electromagnet stuck to the magnet problem..

[@dunjahu5143]

Hi. Great video and best description of how to open it. However I was not able to fix my toothbrush. I dropped it and in the beginning it was still working a little bit, randomly, it would work for a minute, then stop for a minute etc. , then it completely stopped. When I opened it, the magnet gap was indeed closed. I opened it but still nothing. I left it for charge because I haven't used it for 2-3months. Still nothing. I opened it again and opened the gap to the maximum but it still doesn't work. Could it be the battery? But when it's in the case, charging, the light is on (green) and when I take it off, all leds light up as usual. I don't see any corrosion anywhere, and the upper tip is not loose at all,nothing moves,the screw on the top doesn't move either.

[@letsfixitgarage]

Interesting case.. if it didn't had any water damage I would check the button. Shorten left and right leg maybe the button has a defect.. or there could be some micro cracks on the pcb board..

[@dunjahu5143]

@@letsfixitgarage thank you so much for your reply. what do you mean by shorten left and right leg?

[@letsfixitgarage]

@@dunjahu5143 button legs next to rx and tx. If you shorteen it with a wire or other metal tool it will simulate pressing the button. If it turns on the button is foulty if no problem is somwhere else :/

[@dunjahu5143]

@@letsfixitgarage got it. Will try, thanks again!! 👍

[@joephillips6634]

I replaced battery on mine and it has same problem as before battery change. I think charging circuit is not working because it did turn on immediately after changing the battery. Any idea how I can debug that issue?

[@letsfixitgarage]

What was the problem before the battery change?

[@joephillips6634]

@@letsfixitgarage It acts like the battery doesn't have enough charge. No vibrating but does make a tiny "blip" of sound/vibration if I push the power button. The button light blinks once and then nothing else. If I put it on the charger, it shows a solid charging light. The + and - pads on the PCB measure over 4v. Immediately after replacing the battery and trying it, it vibrated for a second or two and then I think I turned it off. When I remove it from the charger, all the lights shine for a while as it normally would

[@letsfixitgarage]

@@joephillips6634 and when you disassembled it no water damage inside. Rubber seal in good condition? Seen one simmilar it had water damage on PCB underneath the button.

[@joephillips6634]

@@letsfixitgarage It's possible a little bit of water got into it but I didn't see any physical damage or burnt components on the top facing side of the pcb. I might try to just reflow the solder as a last resort, for fun

[@letsfixitgarage]

@@joephillips6634 if you take out the pcb from its casing the damage could be on the back side of the board.

[@Josh90265]

Any advice as to why my sonicare diamond clean stops working after battery replacement and a charge? I installed the battery and the toothbrush turns on. I then place it on the charger to top it off. Then come back to find that it will no longer turn on. Thanks!

[@letsfixitgarage]

First question would be why you replaced the battery.. usually in these cases toothbrush has water damage. Check my videos for water damage repair. Another thing could be some kind of damage that was done by replacing battery but for that it's impossible to suggest something.. board needs to be examined ..

[@Josh90265]

​@@letsfixitgarage Hi there! Thank you very much for your reply. I've had 2 replacements in the last two years. I'm not quite sure what happens, but the toothbrush fails for some reason. I usually go to Philips for the warranty but I'm sure I'm out of the time period. I figured I would try a battery replacement. I purchased a battery off ebay, replaced it and it started working immediately. I then charged it overnight as that has been the instructions I've seen. The next day, it doesn't start up. I then purchased some batteries off amazon as I wanted to test to see if it was the batteries or the toothbrush. Again, replaced the battery with the amazon battery. Starts up, put it on the charger. Couple hours later to check, toothbrush not working. Today I have one last battery as I was going to replace a family members toothbrush, but wasn't so sure about the batteries. Again, replaced it and the toothbrush works. Now I'm just afraid that once I charge the toothbrush, it will stop working. My wife has had the same sonicare for years! Me on the other hand, have had constant issues. Seeing what you gather from this info. Thank you!

[@letsfixitgarage]

Hi, as I wrote before had only one similar case when you install a new battery some IC on the board starts to heat up.. and of course drain the battery. In your case I would suggest after installing the battery don't put it in it's housing touch around on pcb check if something heats up. If no, put it in charger and again touch the board if it discharges it has to heat up.. and don't throw those batteries away, they are perfectly good. Get a simple li ion cell charger from your local electronics shop and you can charge it up. Just don't leave them discharged for a long period of time as this damages the cell chemistry..if you have a power supply it's possible to top it up with that too, but there are some risks with that.. hope this helps!

[@Josh90265]

@@letsfixitgarage So this time I did feel the pcb and found one of the chips did heat up. Turned it on two or three times to make sure it worked. I also didn't put the toothbrush on the charger and instead left it on my desk. I cam back to it after an hour or so and it is again not working. What do you recommend doing in this situation? Is the toothbrush faulty and just give up on changing out batteries? Really appreciate the quick feedback. Thank you!!!

[@letsfixitgarage]

Yes the element that heats up is faulty and needs to get replaced and the toothbrush will charge normally again. Questions is what that element is and will you be able to get it in your electronic shop.. you could buy a damaged one of eBay and resolder the component from the bad one.. but if it's a multiple leg it is a little bit more difficult as simple solder job..