The most common fault on a laptop charger power supply

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Electronics Repair School

Electronics Repair School

Күн бұрын

Пікірлер: 237
@velcurry
@velcurry Жыл бұрын
I love his attitude, if a charger isn't working, you think we just throw it in the bin? have a heart.
@little_britain
@little_britain 5 ай бұрын
Just searched for this issue (repair laptop power supply), and found your video. It has inspired me to crack open the charger and troubleshoot it.
@Enjoymentboy
@Enjoymentboy Жыл бұрын
This is great information and in fact this is the exact reason why I always leave the AC cable plugged into the block. The laptop I am using right now is a 2009 HP Pavilion DV7 and it's still using the original power adaptor and the AC cable has only been out of it maybe 3 times since it was brand new. I also always tell people to plug the power adaptor into the mains BEFORE they connect it to the laptop just in case. I've seen a few laptops die from power spikes due to a bad charger when plugging into the mains.
@JMD-tu1xm
@JMD-tu1xm Жыл бұрын
I've always done that, and still, my old laptop got shorted out from a bad power unit and I had to buy a new power circuit because I couldn't fix it.
@servicetechnician3264
@servicetechnician3264 Жыл бұрын
I've seen many products with the same issue. One thing to consider is the carbon build up on the arcing pins. I normally will remove the connector from the pc board and check the board for carbon. It needs to be removed. George B
@2timothy477
@2timothy477 Жыл бұрын
Thank you for you passion to repair and not throw away. Pax. Steven.
@Alex-mj7km
@Alex-mj7km Жыл бұрын
Yes, capacitor is nasty. Not only I got the shock, but I also burnt the IC that generates impulses and created a fireshow on plugging charger in, blew up the mosfet... But yes, you'd be amazed how many good original chargers get thrown away because of cable or socket. In my university while we had recycle bin, i've been taking home laptop chargers each day, all of them are original and worked properly. Now I don't know what to do with 20 odd chargers lol.
@stevenflogerzi1955
@stevenflogerzi1955 Жыл бұрын
Ebay at half price.
@MikinessAnalog
@MikinessAnalog Жыл бұрын
Laptop voltages are fairly universal (18-21 volts/4-5 amps) even if the end connectors are not
@padddy48
@padddy48 Жыл бұрын
@@MikinessAnalog yes all my latops operate at 19 volts and i have like 4 of em
@pcstar123
@pcstar123 Жыл бұрын
Save them as power supply for various projects, I use 2 to power my 2 iMax B6 chargers, and converted one with a step down converter to charge batteries.
@MrFixiit
@MrFixiit Жыл бұрын
lol like new with black tape great work sorin
@mikaeljonsson4686
@mikaeljonsson4686 Жыл бұрын
Great video! A brand name charger would catch a pretty penny... although then it would have been craaazy glued inside and welded together....
@backie200
@backie200 2 ай бұрын
You saved my morning today Am I had an adapter problem burning the hell out Now it's fixed... Thank you for the good technique
@tellolite
@tellolite Жыл бұрын
Great video. It's the first time l watch content like this in this channel, l think.
@leimad13
@leimad13 Жыл бұрын
Right as usual! Also once you touch the charged 400V cap you will never do it again, trust me guys!
@ricardoferreira2811
@ricardoferreira2811 Жыл бұрын
Did that last week, half an hour after unplugginga board to the mains I thought it was discharged, and zap. Then I checked, still had 120v.
@TomiBorchert
@TomiBorchert Жыл бұрын
so is the charger 3 phased, capacitor getting 400v from 2 phase. or is there a boost converter inside charger? how does it get to 400v if main supply, 1phase is 230v?
@e1gr3co
@e1gr3co Жыл бұрын
@@TomiBorchert multiply it by square root of 2. the most distant points of the sine wave. so the cap will be charged to this voltage after rectifier. cca 325V DC!
@camelid
@camelid Жыл бұрын
At my high school - a vocational technical school - it was a popular prank to charge a capacitor to a hundred volts or so and toss it to someone to catch. I learned from others' experience and refused the offer to catch anything. :)
@KB1UIF
@KB1UIF Жыл бұрын
@Tomi Borchert 230-240vac is the RMS voltage, not the peak voltage. Plus, the capacitor voltage needs to be rated higher than the applied normal working voltage. There will be a safety margin.
@cashdepannage9682
@cashdepannage9682 Жыл бұрын
Incredible ! the charger box was opened by miracle ! What the most hard thing. LoL. Thx Sorin
@cashdepannage9682
@cashdepannage9682 Жыл бұрын
@@omarhamani2126 In the same way as to remove the battery stuck in a smartphone? I must try! thank you ! Nice !
@Radek__
@Radek__ Жыл бұрын
How to open it? Very good trick is to apply petrol(gasoline) or diesel using syringe. Put small amount in that hole-lines around the charger (it will spread out automatically by itself) and then wait 2-3minutes. Then you will open it very easily by hand. (when you play with petrol/diesel - remember to open the window to provide fresh air)
@midodido1941
@midodido1941 Жыл бұрын
its easy to open a copy charger
@carlosgarciaoropeza5480
@carlosgarciaoropeza5480 Жыл бұрын
I hated opening them so much (to the exasperation of saying "nice words" in my native language) that I had to buy a dremel. Thank you very much for the tip. All the best.
@1pcfred
@1pcfred Жыл бұрын
@@carlosgarciaoropeza5480 people here keep saying they use a Dremel but high speed tools don't cut plastic too well. They just melt it. Most of those plastic cases you can open by just squeezing them in a vise. The plastic weld cracks then. If I can't get the case to just split apart as a last resort I'll use a hacksaw to cut it on the seam. Once I get a nice slot going I can get a little pry bar in there and get it to bust open then.
@carlosgarciaoropeza5480
@carlosgarciaoropeza5480 Жыл бұрын
@@1pcfred Dremel SC476 SpeedClic
@1pcfred
@1pcfred Жыл бұрын
@@carlosgarciaoropeza5480 rotary tools really don't like running slowly. The cooling fan in them doesn't work so well when they don't turn at high speed. I blew a Dremel up once cutting plastic with it. It overheated and the magnet in it split. Damned thing flew out of my hand when it let go. It's really not easy to design variable speed electric motors.
@blackdotkiller1
@blackdotkiller1 Жыл бұрын
It was a short video but was very helpful 👌
@HotelPapa100
@HotelPapa100 Жыл бұрын
Frankly, if you do a bit of dumpster diving, you probably have more of those power bricks than you can shake a fist at.
@NavyPanther54
@NavyPanther54 Жыл бұрын
Thanks for this! I started by checking the voltage at the plug to the laptop, then the wire going to the wall (cheap off aliexpress so didn't trust it). I opened it up to check the caps like another video said, but mine were fine. It ended up being the same pin in my charger so soldered it up and good to go! Butchered the Hell out of the plastic though. That case was NOT meant to be opened ever in its lifetime. The plastic was softer than the glue so it wouldn't pop open, just bend and rip the plastic. Ended up cutting it with a Dremel cause I didn't wanna screw around anymore
@Derek_Garnham
@Derek_Garnham Жыл бұрын
Thankyou very much. I love the common fault videos, they do so much good for people.
@barrdack
@barrdack Жыл бұрын
Even if you have the money to buy a new one, throwing the old one away is contributing to the problem of e-waste.
@ferna2294
@ferna2294 Жыл бұрын
Just to add something to an already extremely useful video: I usually use cyanoacrylate glue so I don´t have to use duct tape. It´s extremely fast acting and the bond is strong. Use ONLY the necessary so you don´t seal it so much that you can´t open it anymore. It also burns plastic so try to avoid drops of it on the visible parts of the charger. A q tip always helps if you want to make it look as good as new.
@blam5ky
@blam5ky 2 ай бұрын
also known as super glue? 🤣
@ferna2294
@ferna2294 2 ай бұрын
@@blam5ky I really have no idea. I don´t know the chemistry of super glue.
@bulwinkle
@bulwinkle Жыл бұрын
A fault that I find just as commonly is that the mains lead is kinked and and one or more of the conductors is broken because the device is pushed up against a wall by the user.
@paulmuff9883
@paulmuff9883 Жыл бұрын
As always a great video, manny thanks for sharing your knowledge ❤
@mathiaseze2286
@mathiaseze2286 Жыл бұрын
This is a great information,I so much love the lecture thanks allot ... from Nigeria ♥️♥️🇳🇬🇳🇬🇳🇬
@Subgunman
@Subgunman Жыл бұрын
One main issue is the use of no lead solder. Do yourself a favor on all of the critical components, add a bit of lead solder to the joint to wet it and then extract the old solder and resolver with regular lead tin solder. It has some flex to it. As for those pins out of the socket I would mix up some epoxy and place the charger upright and add the epoxy to where the leads come out of the plastic. You are right, it is a very cheap copy of the real thing and the quality of that connector is not the best. That epoxy should add strength to the pins coming out of that connector housing.
@PAL_GUN
@PAL_GUN Жыл бұрын
I love your attitude and that you share your knowledge
@marwanmoussa7221
@marwanmoussa7221 Жыл бұрын
Hi Sorin, thank you for sharing of your knowledge. What is the best way to crack open a charger?
@Subgunman
@Subgunman Жыл бұрын
One way is to use a vice and clamp it into the vise just below the seam and tighten. You should hear the glue crack as you squeeze it. If it fails to crack open, flip it upside down and re clamp it in the vise and tighten. It should crack. You have to understand that the case is designed where there is a reduced thickness section that fits into the other half. Squeezing the right half causes it to compress inwards ungluing the joint. If compressed from the wrong side you are forcing the two halves together. A thin steel putty knife also helps once you have split the case lengthwise. Ungluing the short ends is a bit harder. If you can see which half fits into the other half, use the putty knife to carefully force down into the end joints. Cheap aftermarket supplies are easier to open than the authentic supplies. Use care, if you slip you can get a nasty cut on your hands and or fingers.
@jpedrick1571
@jpedrick1571 Жыл бұрын
I would have cleaned the carbon off prior to soldering with a fiberglass brush. And cleaned the flux and residual conductive carbon off with alcohol. Leaving the carbon there could result in yet another poor joint and also arcing through the carbon track pending the voltage involved.
@ngwanindi
@ngwanindi Жыл бұрын
Thanks you sorin
@xerejuneseve6333
@xerejuneseve6333 Жыл бұрын
You may also glue the connector for better strenght.
@Excray80
@Excray80 Жыл бұрын
He also could clean this PCB ...
@ferna2294
@ferna2294 Жыл бұрын
Right! Some hot glue does wonders in order to get the output cables steady and free from separating from the charger ♥
@annaplojharova1400
@annaplojharova1400 Жыл бұрын
I would better clean the flux after soldering, mainly at the primary side. The rosin residues tend to draw moisture in and then cause flashover as high voltage is there present over the small distances on the PCB. Mainly the transistor is a very weak spot (about 500..600V peak between the two legs with less than 1mm creep distance).
@skeggjoldgunnr3167
@skeggjoldgunnr3167 Жыл бұрын
He uses nothing but colophonia - pine rosin with terpenes boiled -out. Notice how it looks like Baltic amber? It's hard. Then the soldering iron melts it, it is transferred to solder joint on the tip and cools and forms a shellac - like glass - like Ph balanced neutral protective shell. If it doesn't harden or if it turned black - it must be washed away, yes. Improper heat causes this. Black colophonia IS now caustic. But when done right: that protective glass shell protects the area from liquid damage, oxidization, etc. Sorin has one of our community's greatest videos - of truly great value - where he shares with us how to make our own liquid soldering flux.
@annaplojharova1400
@annaplojharova1400 Жыл бұрын
@@skeggjoldgunnr3167 I know it is "just the resin", but believe me, it is highly hygroscopic and tends to form conductive paths. When still dry, it appears to be perfectly OK. But once it absorbs some moisture (it takes time, but it really does), it upsets high impedance circuits, but really does tend to form carbonized filaments when exposed to high voltage, resulting to nasty flashovers. It does not happen immediately after such repair, the problems start after a year or so when sometimes exposed to humidity (temperature changes are enough; the humidity has to diffuse towards the conductors, so it takes time after exposure as well)...
@skeggjoldgunnr3167
@skeggjoldgunnr3167 Жыл бұрын
@@annaplojharova1400 So in high voltage, high impedance circuits I should take care! Thanks for further enlightening me! It makes sense., assuming it is so prone to absorb this moisture. Thanks for adding your expertise.
@annaplojharova1400
@annaplojharova1400 Жыл бұрын
@@skeggjoldgunnr3167 The best practice is to automatically clean it after your work is done. First the "high impedance circuits" are present way more often than you would expect (e.g. crystal connection to a microcontroller is a high impedance circuit - biasing tends to use 10meg+ resistances, a feedback divider around an opamp or regulator usually is another one, where it tend to shift voltages or introduce quite a lot of noise). Second aspect is, it block the view on the joint, so cleaning it allows you to inspect your work, whether it is really soldered as it should be. But with cleaning you should be careful the dissolved flux residue does not contaminate connectors, sockets, switches or so. What works for me is scrape the bulk of it mechanically and only the rest clean out using a solvent (IPA,...) and a small brush or "earbud", so the washed off mess does not end up somewhere without my control.
@skeggjoldgunnr3167
@skeggjoldgunnr3167 Жыл бұрын
@@annaplojharova1400 I used to use a freon vapor machine The vapors would rise as a gas onto board, drop to under flash point, turn back to liquid state and precipitate back down - it did perfect work. Then I am told that this process was found by the state of California to be too effective and you're racist if you use that method now. So now I use Acetone bath with acid brush then rinse in 50/50 Perchloroethylene / N-Hexane. And what do you MEAN, insinuating that my soldering isn't perfect every time the first time?! Why, I NEVER! 😜 Cool info! Thanks. Will add that to making today a much better day, for having learned something! My MIT / US Navy electronics instructor back in the 1970's said "A day that you earn money is a good day. A day that you LEARN something is a GREAT day!"
@drstrangelove09
@drstrangelove09 Жыл бұрын
I enjoy listening to you!
@svezhara
@svezhara Жыл бұрын
Ofcource and its much better for the invironment instead buying new trashy charger...Well done!
@dvsr5296
@dvsr5296 Жыл бұрын
How do you open those chargers and so neatly? They are pain in the ass to open the plastic casing...
@blackdotkiller1
@blackdotkiller1 Жыл бұрын
Not only does your laptop not work, but you get a free fireworks display for free 🤣
@andrewhaychemistry
@andrewhaychemistry Жыл бұрын
Excellent video, thanks. How did you split the case of the power supply? I've often found them to be welded together!
@jimkovacs7
@jimkovacs7 Жыл бұрын
We use a Dremel
@1pcfred
@1pcfred Жыл бұрын
I crack the cases open by squeezing them in a vise.
@Thankz4sharing
@Thankz4sharing Жыл бұрын
When an enclosure can't be pried apart, I've sometimes been able to open the seams using a very sharp chisel and careful application of moderate hammer blows. It depends on the customer - if they are satisfied with functional but ugly it makes things much easier. Just crack it open any old way and tape it up when done. Some customers will be happier with a more expensive replacement unit than they are with a cheaper but more obvious repair. Knowing how to repair things is sometimes less important than understanding customer expectations. Actually, way more than "sometimes".
@1pcfred
@1pcfred Жыл бұрын
@@Thankz4sharing I've done the chisel on the seam thing myself. Sawing can work too. If you're very careful. Usually they just split on the seam. The ultrasonically welded ones split apart. Some are tough though.
@Thankz4sharing
@Thankz4sharing Жыл бұрын
@@1pcfred Good point. A fine tooth bow saw is handy. Probably a good idea to wear a mask. Some of that plastic dust is nasty.
@JustMe-in5jn
@JustMe-in5jn Жыл бұрын
Thanks Sorin. Waiting for the laptop repair video next.
@xanataph
@xanataph Жыл бұрын
My partner's laptop charger was playing up and I was convinced it was this exact problem. However, it actually turned out to be a break in the DC cable where it emerged from the unit.
@maxg5457
@maxg5457 Жыл бұрын
Some chargers connect the socket to the main board using flexible wire to elevate mechanical stress a very nice solution
@negvorsa
@negvorsa Жыл бұрын
Replaced 4 chargers till now!!
@Sht97
@Sht97 Жыл бұрын
Hey Sorin, I was hoping you would shows us how did you open the charger in a non destructive way!! Thanks a lot.
@DarkGT
@DarkGT Жыл бұрын
Maybe pop it open with flat screwdriver, some marks are visible.
@Adrian_Buliga
@Adrian_Buliga Жыл бұрын
with a knife and hammer. it's not a joke :). that's how I open them.
@Sht97
@Sht97 Жыл бұрын
@@DarkGT i used screwdrivers before but yeah they are destructive lol.
@Sht97
@Sht97 Жыл бұрын
@@Adrian_Buligadoes the knife needs to be sharp or not? how long is the knife should be?
@DarkGT
@DarkGT Жыл бұрын
@@Sht97 Sorin used a electrical tape, it's destroyed in some ways. You can cut it clean with a saw or try to pop it with something flat and thin. You can heat a knife red-hot and make your task easy.
@Plan-C
@Plan-C Жыл бұрын
Learning so much from you Sorin. Wishing you every happiness.
@danielmichaelhenrt5510
@danielmichaelhenrt5510 Жыл бұрын
Am i Michael henry by I always enjoy your teacher on KZbin I join school team to learn motherboard repair
@apollorobb
@apollorobb Жыл бұрын
The Electric tape to hold the covers on is priceless comrade lol
@yaredtariku7177
@yaredtariku7177 Жыл бұрын
Thank you
@fivish
@fivish Жыл бұрын
ASUS chargers are only good for 18 months then die. I have got through two! Dell chargers are good for 17 years +. HP charger, 11 years old, still ok. I have an ebay charger for the ASUS which now has a broken wire in the plug. Gerr!!!
@jameschambers5505
@jameschambers5505 Жыл бұрын
Thanks for the videos sir
@Dracula.25
@Dracula.25 Жыл бұрын
You're right , i didn't throw my charger away after its not working properly unless i weggle it , after it's stopped working a put in the laptop bag , Never Throw it
@SebastianScholle
@SebastianScholle Жыл бұрын
you missed the third pin on the charger connector. you should have re-done that too, because it is likely also weak from the wear.
@ErwinKouws
@ErwinKouws Жыл бұрын
@6:09 you can already see a faint ring around the third pin as it is starting to fail also
@davidsenica8175
@davidsenica8175 Жыл бұрын
Sorin, how did you open the case with no screws. What is the easiest way?
@digihorse6730
@digihorse6730 Жыл бұрын
Sorin I think you soldered the Live/Neutral and Earth but didn’t do the other Neutral/Live pin and it looked iffy as well
@esspe2
@esspe2 Жыл бұрын
Actually for me he has soldered the middle and left pin, look at the tracks 03:32. The right one solder seems good.
@james10739
@james10739 Жыл бұрын
Ya I had a charger for something else that was a wall wart one no cord for the 120v and they were like just a spring steel or something for the line and neutral that were not making contact
@SirPrancelot1
@SirPrancelot1 Жыл бұрын
Excellent. Thank you.
@rfr653
@rfr653 Жыл бұрын
Good job mate 👍
@scary_user
@scary_user Жыл бұрын
Thanks boss for being there at all time.... What can you say to Dell chargers that says plugged in not charging? I have tried to know the cause but I guess my effort isn't enough, as I can use your help...
@Umski
@Umski Жыл бұрын
Probably the battery gone if it still powers up using the charger
@davidbates2161
@davidbates2161 Жыл бұрын
I agree, leaving in the same condition it was in when you got it. Only working.....I would do the same exact thing.
@MrRvdbeek
@MrRvdbeek Жыл бұрын
Love to watch all the video’s
@tongravity5668
@tongravity5668 Жыл бұрын
Don`t get me wrong,but most company IT admins will just throw this kind of not working chargers away. First thing - even if some of them try to open charger - that casing will be FUBAR at the end,so none of these people will loosing time with it.
@Umski
@Umski Жыл бұрын
Or tell the user to reboot the system 🤣
@johnlee1101
@johnlee1101 Жыл бұрын
Can you post a video on how to open a laptop charger plastic housing, i tried a few times and all end up damaged the housing badly. How did you do such a nice job?
@1pcfred
@1pcfred Жыл бұрын
You squeeze the case in a vise. You squeeze it until you hear a crack. But don't squeeze so tight you're squeezing what's inside the case. If you don't get the crack flip the case in the vise and squeeze the other side. If that doesn't work then you have to squeeze longways. If that doesn't work then you have to hammer a screwdriver into a corner and twist. If that doesn't work then you have to chisel the seam. If chiseling the seam doesn't work then you have to break out a hacksaw.
@daz41262010
@daz41262010 Жыл бұрын
great tips Sorin :)
@andreiuul1
@andreiuul1 Жыл бұрын
I salvaged so many chargers from friends about to throw them away because they were "not working", most of the time it would have been just a wire short or something like this When I'd offer to fix them they'd just say they'll buy a new one... so now I no longer carry changers on myself, I already have one laying around all the usual spots
@mrv4757
@mrv4757 Жыл бұрын
Yeah. Don't bother cleaning the burn residue before soldering, neither removing flux afterwards.
@BritishBeachcomber
@BritishBeachcomber Жыл бұрын
The real problem is mechanical stress. It lifts the PCB pad, overheats, burns out. Only happens on cheap PSUs without flexible cable from socket to PCB.
@mariannevanoostenbrugge3541
@mariannevanoostenbrugge3541 Жыл бұрын
maybe clean with IPA alcohol after soldering, the residues of the spark vapes may be conductive and cause future trouble.
@db.1881
@db.1881 11 ай бұрын
Hello... Do you know why a battery charger green and red indicator is not working, i mean the indicator always red when its charge nothing... but when i use it to charge battery its still charging but it never get the green light on... Cause of this charger problem started because some shortcircuit between positif and negatif of the dc current.. So i wonder what is brokenn is diode or the IC chip that control on off of the charger? I'l be glad if you can give me a clue Thanks
@bokiboki018
@bokiboki018 Жыл бұрын
hello, i have a question a colleague gave me a laptop acer m52287 the laptop is not working he tried to charge the laptop with a trotinet charger, i think it has a 48 volt charger is there any salvage laptop? thank you
@Farukhmurad
@Farukhmurad Жыл бұрын
How did you open this...? ?????????????????????
@ws-xc4kr
@ws-xc4kr 3 ай бұрын
thank you!!!
@corel965
@corel965 Жыл бұрын
Great picture under microscope now 🤓 btw Sorin are you using paint thiner for chargers or some of your other methods ?
@MikinessAnalog
@MikinessAnalog Жыл бұрын
"Cold" solder point producing intermittent contact. I usually see this on the DC side of devices that are repeatedly plugged & unplugged.
@orlandopol1216
@orlandopol1216 Жыл бұрын
This is great 👍 👌
@MartinRepairs
@MartinRepairs Жыл бұрын
Hardest part of that job is opening the charger, unless its a copy.
@1pcfred
@1pcfred Жыл бұрын
Some open easily some are more stubborn. You have to have the tools to do it. The main tool is a bench vise. That alone will open most. The ones that don't just crack open you have to get more aggressive with. I find that attacking a corner with a screwdriver usually does it. But it if doesn't then I'll hammer and chisel the seam. Just walk along the seam with the corner of the chisel.
@hugoegon8148
@hugoegon8148 Жыл бұрын
Why not reflowing the third pin of the power plug? Seems beginning of solder crack from what I could see in camera.
@KB1UIF
@KB1UIF Жыл бұрын
You missed a pin !! Those mains connectors have 3 pins. You re-soldered 2 but missed number 3. Number 3 also looked like a dry joint !!
@Umski
@Umski Жыл бұрын
That reminds me one of my HP supplies makes an arcing sound, if not all - what a shockingly crap way of attaching the mains input to the board 🤦‍♂ Bit like crappy micro USB ports
@adaniel69
@adaniel69 Жыл бұрын
maybe you make a video on how to open these type of chargers... i mean how to take the housing apart. thanks
@Adrian_Buliga
@Adrian_Buliga Жыл бұрын
cu un cutit si ciocan merge cel mai bine....dupa parerea mea. le iei pe mijlic la ciocanit si se deslipesc. niste rabdare si gata. :)
@NaderGator
@NaderGator Жыл бұрын
yes, this is a copy .. the genuine HP psu has brass plates all around the brick from inside with yellow tape and insulation (for prolonged use and overheating) .. you didn't show the hardest part : opening the case ;))
@ssgeek4515
@ssgeek4515 Жыл бұрын
De-solder the power skt and remove use two part epoxy glue and replace skt gluing it to pcb and resolder
@rizab660
@rizab660 Жыл бұрын
It would be very helpfull, when you show, how to open the plastic cover, without destroying it. Thanks.
@hieroben
@hieroben Жыл бұрын
Opening the case is usually the trickiest part of these repairs. How do you do it? Other common faults: The DC-Cable breaks inside and the thermal fuse in the charger might fail if you put it under a pillow or something...
@ytrew9717
@ytrew9717 Жыл бұрын
i open it by (relatively) gently hammering a blade of knife (small camping knife) the slot / middle part (juste aviod the corner, you will break it). I guess there is a better solution
@DanielsGameVault
@DanielsGameVault Жыл бұрын
Place the adapter on its side and place a (butter) knife blade on the seam. Whack it with a rubber mallet harder and harder until it splits. Once you've cracked it open, you can use a spudger or even a large screwdriver to crack the rest of it. Use superglue or zip-ties to close it back up when you're done.
@Radek__
@Radek__ Жыл бұрын
How to open it? Very good trick is to apply petrol(gasoline) or diesel using syringe. Put small amount in that hole-lines around the charger (it will spread out automatically by itself) and then wait 2-3minutes. Then you will open it very easily by hand. (when you play with petrol/diesel - remember to open the window to provide fresh air).
@panaitepaul6798
@panaitepaul6798 Жыл бұрын
Thank you for sharing! I'll try
@hieroben
@hieroben Жыл бұрын
@@Radek__ I have tried this technique once with lighter fluid and it did not work. I may have to retry using "real" gasoline, thank you.
@westsenkovec
@westsenkovec Жыл бұрын
I'm more interested how opened the case of the charger.
@1pcfred
@1pcfred Жыл бұрын
You can crack them like they're a nut. Just squeeze it in a vise. Most of the time it'll split open cleanly. Sometimes I'll hold half in the vise and get in there with a flat blade screwdriver and give it a pry in a corner. Then there's the hold half and work a chisel with a hammer down the seam method. I love cracking welded plastic cases open. So satisfying.
@ferna2294
@ferna2294 Жыл бұрын
@@1pcfred I always use a screwdriver and a hammer. I will try the vice method. Sounds less destructive than mine. Thank you.
@1pcfred
@1pcfred Жыл бұрын
@@ferna2294 some split real clean and easy and some don't. How it goes is on an individual basis really. I give them a squeeze with the seam at the top of the vise jaws half in and half out. Then if it doesn't go the one way I'll flip it over and squeeze the other side. Then rotate it and squeeze on the other axis. Because you can't squeeze them too much. Or you'll squeeze the parts inside. If it's going to go it'll go. Some do and some don't. A lot of them just split right open. The ones that don't you have to work those. I buy adapters at thrift stores. They'll usually have a cardboard box full of them somewhere. They usually cost maybe a buck a piece? So I look through what they got and if any look interesting I'll pick them up. Cracking them open is oddly satisfying.
@junkthe
@junkthe Жыл бұрын
Help, i have analog controller Generic, work fine analog on battery usage laptop. But when i plug ac/dc adaptor to laptop/pc. My analog controller behave unstable , all moving, and some digital button blinking. I saw this on joy.cpl What or any suggestion ?
@peterclaver9786
@peterclaver9786 Жыл бұрын
Can you please make a video for diagnosing a charger
@DarkGT
@DarkGT Жыл бұрын
I had one not OEM charger that would work for a while and they the laptop would shutdown and the light on the charger would start blinking. Nothing is burned inside it, won't bother trying to fix something cheap that could end up breaking something expensive.
@Goreface69
@Goreface69 Жыл бұрын
I thought sparking was relatively normal for a power supply, but if I understand this video correctly, it means there's a bad solder joint that should be fixed?
@bkaczy
@bkaczy Жыл бұрын
The question is how easy is to open a charger case without a kind of dremel? Thanks Sorin!
@1pcfred
@1pcfred Жыл бұрын
A lot of times you can split the case open cleanly by squeezing it in a vise. Put the split line right on top of the jaw. Then squeeze down. It if doesn't open then flip the case in the vise and squeeze the other half. Sometimes you have to rotate the case 90° and squeeze that way too. But then you need a big vise that can open wide.
@nld-bl5ct
@nld-bl5ct Жыл бұрын
The question is, how did you get the two pieces apart from the power supply?
@ferna2294
@ferna2294 Жыл бұрын
Usually a flat headed screwdriver and light hits with a hammer or even any other lightweight tool.
@jameshorn7830
@jameshorn7830 Жыл бұрын
Clean the board before and after soldeing!!
@Zain6968
@Zain6968 Жыл бұрын
Is it dangerous if I just ignore the sound? And just don't do anything
@ferna2294
@ferna2294 Жыл бұрын
No, not dangerous, it will simply fail at some point.
@shailu3003
@shailu3003 Жыл бұрын
How did you open Charger without damaging it , Alcohol ?
@davidbolha
@davidbolha Жыл бұрын
A flatheaded screwdriver & a hammer will suffice. 😊
@ashleynery8092
@ashleynery8092 Жыл бұрын
aww you didnt show us the hardest bit of opening those darn cases of the chargers
@giuliocarlini6681
@giuliocarlini6681 Жыл бұрын
I love your videos. Just one thing, you cam is a little bit "froggy" expecially the microscope, when you zoom in the view is not Clear
@Rahulelectronicsworld
@Rahulelectronicsworld Жыл бұрын
I got a sony led chrger that had no octocoupler. And output 19v not stable. So what could be problem. I tried to repair it. But couldn't. Can you explain about that.
@fu1r4
@fu1r4 Жыл бұрын
Why pull out that end of the cable? You put that end in once and then you never unplug it again. I always unplug the cable from the wall 😁
@cimou-md
@cimou-md Жыл бұрын
How did you open the charger ? And if there is hi volts on that capacitor how do you discharge it ?
@gower1973
@gower1973 Жыл бұрын
The ez way is stick a screwdriver across the terminals, the safe way is to clip a bleed resistor across it
@gamlesleyyillom4244
@gamlesleyyillom4244 Жыл бұрын
That's only common the the house knock offs because the OEM hp chargers don't use the same technology in their chargers
@larryscott3982
@larryscott3982 Жыл бұрын
What a timely vid giving the emergency on a United flight out San Diego today: laptop/charger fire forcing an emergency return!! A fire onboard an airplane by a passenger’s electronics!! Today
@alexanderandreev7151
@alexanderandreev7151 Жыл бұрын
Во-первых, разъём с тремя выводами, значит и пропаивать надо все три. Во-вторых, нагар надо счищать потому что он проводит ток.
@abdallahharfoush9449
@abdallahharfoush9449 Жыл бұрын
Make videos about fixing laptop chargers
@worroSfOretsevraH
@worroSfOretsevraH Жыл бұрын
This is why i only have old trash. My PC is old, my microwave is old, TV and so on. Because i can't throw them out. I always keep repairing them. :(
@MrLica88
@MrLica88 Жыл бұрын
It's a bless...and a curse :))
@zx8401ztv
@zx8401ztv Жыл бұрын
i've found the 19v plug to go short because of people tripping over the 19v cable. I don't throw power supplies away.
@jacks5kids
@jacks5kids Жыл бұрын
Your problem is that you are looking at a FAKE, counterfeit non HP charger. The genuine HP 45W charger does not have a PCB-mounted inlet socket. The Inlet socket in the genuine part is linked t the PCB by flexible wires. A quick look at your power supply board confirms that this is not the real part. Never risk your laptop with a fake charger. Finally, at 5:20, he says what I said.
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