eBike hall-effect sensor error - fix it yourself SMLRO

[@3DPDK]

A "hall effect transistor" (what is being called by most as "the halls") is simply a transistor that operates (conducts electrical current) when it is within a magnetic field. The third leg of the transistor outputs a variable voltage between ground and circuit control voltage (normally 5 volts DC) depending on, or proportional to the strength (or "saturation") of the magnetic field. Because it's the magnets that spin on a brushless motor, as the magnets spins past each hall sensor, it will conduct or output a sine wave signal that the controller uses to determine when and how long to pulse the phase wires. The frequency of this sine wave is also how the controller calculates your bike's speed if you use an LCD panel. If you attempt this fix the two most important things are; 1. make sure the transistor is an equivalent model (use a U.S. made transistor replacement if you can, as Chinese semiconductors tend to burn out or short if you fart wrong too close to them; this is NOT a "racist" remark, most Chinese semiconductor manufacturers use inferior processes to make semiconductors causing them to fail at lower currents and voltages) and equivalent package (shape of the body of the transistor - usually a TO-92 package but SOMETIMES a TO-196, and 2. that it is oriented exactly like the original. As you can see in the video, the transistor has a flat side. Making sure of this orientation prevents connecting it backwards to the PCB.

[@smidgelife]

Wow! Amazing detail 👌🙌😍. Thank you.

[@3DPDK]

@@smidgelife Just trying to unveil the magic. ;) It's really not difficult to have an intuitive understanding of these contraptions if you look at one device at a time. Hopefully it helps the more adventurous DIYers watching your video.

[@smidgelife]

@@3DPDK thank you! Very helpful.

[@toddglennbarrow]

Thank you for making this video. I also had an e 07 code. Wasn't the exact same issue but it was a problem with some wires in the motor hub that had broken loose from the soldering. Wouldn't have ever found it, nor had any idea how to fix it unless I had seen this video.

[@smidgelife]

Thanks! Glad it helped 🤠

[@bawangsan3045]

I saw another great one ,brand name omeci, cant find any detail review like you did yet in KZbin until now.

[@Lenny7118]

Glad you got it fixed and yes it is definitely a must to know someone that can fix those cheap ebikes. As you said he easily saved you a couple hundred dollars or the ebike shop would of just told you that they couldn’t fix it because they didn’t know what was causing the problem

[@smidgelife]

So true. It's also nice to know that it's not just this bike that has those type of sensors. They almost all have that same kind of design. I'm putting the wires back together today and will have the bike ready for my commute by Monday. Thanks for watching.

[@markboweringphotography4408]

Thanks for sharing. This is the video I have been searching for.

[@historyunderbeneath]

Hi. i get an error 8 code on my electric bike LCD Screen. the bike wheel is dead and wont turn. will the Hall censers need replacing. thanks.....

[@smidgelife]

Difficult to say for sure but the whole sensor fix is relatively cheap so it's worth a try.

[@historyunderbeneath]

​@@smidgelife thanks for the reply. i took the hub apart and found that someone who had owned the bike before me had already replaced one of the hall censers. i done a good few test in side the hub on the circuit board and all wires etc. i ended up discovering that there was two wires broken, the yellow & blue leading down from the main big black cable that leads down through the wheel spindle/axle. the two broken wires was the one's that was working the Hall censer that had been replaced. i think who ever replaced the censer must of though it was just the censer a loan that was at fault. when in fact it was just the two broken cables. i have repaired the two cables now and the bike is working just fine. so Error 8 is telling you that there is either a bad connection to the hub, broken wires. or the censers have failed.

[@russellm7530]

​@@historyunderbeneathThanks.

[@CiroNapolitano]

Hello, thanks for the amazing detailed video. I am in the middle of fixing a friend's bike with the same problem and I was wondering if you had any tips to remove the glued in old sensors? I don't want to apply heat because I know it's bad for the magnets. Maybe a drop of acetone?

[@smidgelife]

I think it was just heat from the soldier gun. Thank you

[@CiroNapolitano]

Wow, that was some quick replying! Anyway I've tried with that but didn't work for me. I guess I'll just try with the acetone tomorrow and hope for the best. Thanks for your help.

[@robertmotion]

Great video. Question…does it matter if the hall sensor replacement is unipolar or bipolar? Can’t find any information online or on KZbin. /Bklyn👑

[@smidgelife]

I wish I were educated enough to answer that question 😂. We'll have to ask the community. Thanks for the positive feedback

[@pwood5733]

We could spend hours studying u tube videos and dithering about or we could all just move next door to Juan cos he knows what hes doing

[@smidgelife]

So true! He's a very very smart man! Cheers

[@manuelmatos7199]

Tank you very mutch, i i'am strugle with error 7. Gone try this...

[@TuanLuong-qd7yw]

so touching for an excellent video

[@JamesBondJB007]

Juan should start his own KZbin channel. How to fix cheap ebike. LOL.

[@smidgelife]

Absolutely, or work for SpaceX mission to Mars! 🚀

[@LesterWalters]

Great video. Pyropen soldering iron. No cord needed and the butane heats up quickly. 👍👍

[@memilome3431]

almost new orbea gain same fault , hopefully dealer will fit a new wheel .great video

[@smidgelife]

Thanks for watching 😊

[@oxpack]

Awesome video! Just did some electronic surgery and it worked! Thanks !

[@smidgelife]

Yeah that's a tricky one I'm glad I work for you!

[@bawangsan3045]

Thanks for your video, I looking for a ebike and your video really useful👍👍👍

[@smidgelife]

kzbin.info/www/bejne/nam8qJRmeb6LeqM check out this video too.

[@glussier100]

Thanks for the video. Very interesting, hopefully this was the end of your problems with this bike. :)

[@smidgelife]

Thanks Gilles!

[@pietypereira8239]

My friend had a problem with his Apollo ebike. The hub motor was not spinning. He went to the place he purchased it from and they changed the pedal assist and still could work. So I tried to fix it and i found out the motor controller was faulty (24V 250W). 1 of the mosfet was short circuit and there was no option to replace it as it stayed under silicon coating. The motor controller comes attached to a battery bracket. I found a new controller on eBay which had the similar waterproof connectors (Julet). Please advice me if I must change the hall sensors. Just wondering if the motor controller model KT24ZWSRD -ffF01 will match the hub motor.

[@danielhawkins6619]

Thank Juan for me!, same problem here (error code) now I can fix mine too

[@smidgelife]

Will do! Let me know how it works out. 🤗

[@Catmaster3]

Hey, do you have any idea what the error code 08 is on that bike because that happened to me.

[@smidgelife]

I wish I knew it's just been too long. Is your bike functioning in any way?

[@Catmaster3]

@@smidgelife It turns on it just won’t move with the throttle

[@smidgelife]

Reach out to the manufacturer but it might be similar to the hall effect sensor error I was getting.

[@Catmaster3]

@@smidgelife Alright, Thank You!

[@e-bikeautonomy]

08-99E error codes are usually reserved and you are recommended to contact the manufacturer. I am sure you got this info by now, but someone might find it useful.

[@sedhendo4177]

Wow I have the same error code on my setup. The motor is cogging once it gets to a certain rpm. I’m assuming that’s what you e-bike was doing???

[@smidgelife]

I have a video on how to fix it if you look on my channel.

[@anio6865]

I was thinking about using the 16-22 size crimp on bullet connectors for my 6 hall sensor wires. Then I could just plug and unplug them. Do you think that is a good idea ?

[@smidgelife]

I'd need Juan to chime in 😁

[@anio6865]

@@smidgelife Jaun what ?

[@cantseeusprius9069]

My rear hub motor on my smlro s11f just finally gave up the ghost at 900 miles. Its been buggy with intermittent errors for the last 400 miles. Has your repair held up? I am waiting for hall sensors and statoraide.

[@smidgelife]

It worked for about a few extra months. Then I just finally gave up. Let's hope you have a better experience. Cheers

[@vittoriosilva1454]

It takes alot of thank yous to make a dollar ....

[@Umaru1982]

Great talent! I'm so inspired

[@joneilnaparota6546]

any sensor will do or it depends on the motor or controller?

[@smidgelife]

Good question I'm not an engineer unfortunately. I had my engineer friend helping but I believe the link is there for the hall effect sensor. I think he looked at it with a magnifying glass? I don't recall

[@PamelaCurry]

The crank being on the unsprung side of the rear pivot could be an issue offroad especially on rougher terrain

[@nabilalostwani4074]

Hey man... thanx for the video .. my bikes hub motor is 2000 Watt / 70 Volt. and I tried to read the number of the sensors that already installed... I could not .. but definitely not SS41. so do you think I can replace them with SS41 anyways? cheers

[@smidgelife]

not sure... they are very cheap.... You could try.

[@bobamericana3099]

the assembly process at the factory has the sensors already installed on the board before they are placed in the motor hub . then the controller leads are soddered. hall effect is over-rated for a daily commuter so avoid motors that have this feature...for this very reason .

[@matcross54]

Error 8 ???? Please im french

[@silentagony1019]

What was the initial fault? I have a problem on my ebike where I use the the throttle and the rear wheel won’t move even when I use pedal assist. I tried looking for disconnects, damaged wires, anything to help me but nothing showed up. Now I’m wonder if it’s the hall sensors but I’m afraid it could be something else and I hate to spend money on something that didn’t fix my ebike. Would this method really work to fix my ebike?

[@smidgelife]

It's been so long.... If it's not in the videos then I can't quite remember sorry ☹️

[@kiwimon3204]

Have you fixed yours? I got error 007 on my sw900 display. 2000watt motor. When I push acceleration it not going. My cable running to motor was rubbing next to tyre which exposed colored wires and shorted wires? Or maybe those 3 pronged components need to replace?. I blamed the bike shop that serviced my bike coz they should of zipped tied cable away from back wheel 😡. They tried connecting wires back together and never solved problem

[@silentagony1019]

@@kiwimon3204 I had to replace the whole electrical components of the ebike and use a conversion kit to build my own on the pre-existing ebike I have. I ordered the bike from Amazon and got very little help from the seller so I changed the rear wheel motor, the battery and the controller to suit 1500w. I’m happy with the upgrade and it’s worth more than what I originally bought it for and it goes much faster than before. I’m just disappointed with the seller’s resolve and that I had to take matters into my own hands to get it fixed with the expense of losing more money

[@socialfreak6900]

for someone that smart to not have a job in this field is a bit sad for us ebike owners, imagine how much money he could make doing motor repairs, wed also get peace of mind that someone ask skilled and knowledgeable as him is working on it

[@bobbreakup280]

What's the name of the site? The part names ? Thanks

[@Amir-291]

Pretty interesting Video! Could you elaborate on how he found out that the sensors were bad? How did he test them?

[@smidgelife]

From what I remember... As the motor turns the sensors can be measured to see if they activate, and if they do, they pulse electrical current.

[@Amir-291]

Thanks! You saved me from a tidius motor scavanger hunt

[@3DPDK]

If you have an LCD panel, the #7 error code means the controller is detecting a bad or missing hall sensor signal. Without a dedicated ebike tester, a "down-'n-dirty" method of testing is to apply 5 volts DC to the red and black wires going into the motor (this powers the circuit board in the motor, shown in the video - red is positive and black is ground). Use a volt meter and measure from the black wire (circuit ground) to each of the small gauge yellow, blue, and green wires. These are the hall sensor signals and should read 4 to 5 volts *pulsed or variable* as you slowly rotate the wheel. 1. Read nothing as the wheel spins if there is not 5 volts DC on the red wire. This can also happen with loss of circuit ground (black wire) but that's extremely rare - usually a bad wire or connector. 2. Read nothing as the wheel spins if the hall effect transistor is burnt out or "open" 3. Read any voltage that does not change (or changes very little) as the wheel spins if the hall effect transistor is internally shorted. Do Not confuse the heavier gauge phase wires going to the motor coils - there are three and they also are yellow, blue, and green. You won't damage anything by probing them, but you aren't testing anything if you do. Just remember the phase wires, if connected to a live controller, CAN carry what ever battery voltage you use. 24 volts to 76 volts can give you a pretty nasty shock and contact burn. - best to leave the phase wires alone as they also produce voltage, like a generator, at different levels as the wheel spins even it the cable is disconnected.

[@Amir-291]

@@3DPDK Thanks mate!

[@vishnu_official04]

Sir i perches a new cycle but probleum is show the no on display 555 not working motor only work display, tourch, horn,. Sir (what is probleum?

[@smidgelife]

I have not seen that era before. I'd reach out to the manufacturer and ask for assistance.... Also double check the wiring

[@JoeAnshien]

Does Juan except mail order repairs? I have an e-bike that stopped and I could send the wheel, controller and whatever else he needs to fix. Can't find anyone local and company went out of business.

[@smidgelife]

Let me ask. I'll follow up with you soon.

[@smidgelife]

Send me your email address to [e-mail]

[@danwilder4012]

I have that exact same lcd screen and can't get E10 to go away. Because of that I can't turn on pedal assist or use the throttle. Any ideas I'm dying here

[@smidgelife]

It's difficult to say I had many issues with that e-bike.

[@danwilder4012]

@@smidgelife hey man thank you for responding so quickly. I was actually looking at it right now and it looks like one of the wires connecting to the LCD display is broken. And ten to one that's what it is so I'm going to go ahead and saw to that back on and I'll reply again. Haha. As bothersome as it can be at times it is by far my favorite hobby

[@danwilder4012]

Solder*

[@pietypereira8239]

Try to change the motor controller. Hopefully this will solve the problem.

[@rafaeltrejo1614]

Crazy glue?

[@dapor4920]

I rewired my direct to controller motor cable to a 9 pin waterproof quick connect cable

[@jonathanjohnson6857]

You said there was one sensor dead Why replace all of them?

[@smidgelife]

Just to be on the safe side they were higher quality

[@dimitrisxl]

Hi friends, mine says "461a 03697", but i can not find it anywhere with that name.... Anyone can help me find the same one??? I have SAMEBIKE LO26 500W... Thanks

[@pj520]

Afraid I would have to replace the whole motor. lol. as well as the whole wheel because I'm not replacing spokes either. Eyes aren't good enough for that kind of work anymore. : ( Wonder what a new motor cost?

[@glussier]

Anywhere from $90US to 180US depending ranging from 250 to 750watts. Then, if you can't spoke the motor to the wheel yourself, you'll have to pay a bike shop to do it for you,.

[@royczajkowski3049]

Can I borrow Juan?

[@smidgelife]

I know right? He's amazing.

[@candewan6197]

My bike turns itself off sometimes. The display turns off and I need to restart it several times to continue cycling. Does anyone know what wrong is it? Thanx!

[@JesusOurKing]

Mine does same. Brand new kit... Eventually no rotation 😬 I thought initially was controller now thinking it's a hall sensor .. grrr 😠 I'll most likely order another rear wheel as changing out sensors looks to difficult for me ..

[@sysman76]

not very accurate on zooming objects, but really interesting video, thanks

[@smidgelife]

Thanks for watching and the feedback 😊

[@wildbill4116]

Ohh the poor Rad Rover in the background just hoping for some attention...

[@huypt7739]

Fix controller w/o schematic....

[@kenswireart88]

Error sensor is 08 not 07

[@e-bikeautonomy]

A Hall error is usually 07E. 08-99E are usually reserved and you are recommended to contact the manufacturer.

[@andymartinez1426]

man i would be lost with this electric bikes , ill just stay with my boosted board every time it break ill just ship to them and they fix for free.

[@smidgelife]

😂 we need this right now

[@kencook7962]

Buyers beware. Smlro is a low quality bike. I have 2 folding fat tire. So many problems. One bike the lcd failed and now it won't turn on. I have contacted smlro Jennifer direct and she won't help. Keeps saying will get back soon. So much for warranty or custom service. So left with an expensive brick. Can't ride unless replace controller and display.. expensive

[@ДокторДизель-л4з]

уродство

[@smidgelife]

The idea was good with this bike, but at the end you get what you pay for.