Thanks! Motor was humming since I thought batter was under voltage. Thanks to your video, I realized it was a stuck gear. I got it freed and lubed so now it's working 😊
It would be interesting to get some feedback how this issue starts when you use the brush. Regularly.. my assumption was that you hold the toothbrush rotating head or it gets stuck and In that case motor cannot turn it and fuses to the brushes... But as I o don't use them difficult to figure out the scenarios when it happens...
Very helpful, just repaired two toothbrushes with exactly the same problem: broken charging wire. One addition is really necessary however: when reassebling you should first remove the top cap. After inserting the core into the 'house' the top cap can be replaced with the help of a wrench or so.
Method of opening very informative, brilliant. Good points raised on different problems and how to fix them. Definately make good and re-use video👍🏻well done, keep them coming.
Thanks for your feedback I am quite surprised how this evolved and all the positive comments.. made few more videos but I'm missing the time for editing.. excuses, excuses... :)
I thought these things were potted shut! Was useful to find that you can actually disassemble it. Thanks! Mine had a bearing ring of some kind break in the top, which had leaked in water and then started rusting. So all electronics still worked but I couldn't know until I completely destructively disassembled it. Oh well. New toothbrush is also nice and I know I at least tried :)
The chisel method worked for me. My pro 1000 toothbrush froze after it was dropped. I had to hammer the metal gear a few times before it broke loose. Thank you very much.
Thanks a million! The hammering works! I used a small screw driver and hit the black gear connected to the motor shaft with my palm and it set the gears in place and worked! Oral B 3000
Thanks for this comprehensive video! My Pro 1000 (1 month out of warranty!) was “stuck” just as you described, and a judicious application of a hammer got it going again. You have to wonder what causes this to happen so often. Looks like it really needs better brushes!
An added note about this model. The base is much easier to remove: there is a soft rubber portion on the edge of the cap, marked by a dimple. It’s easy to press there and pry the cap up.
I 've been using this tooth brush for 5 years now. It still works but the rubber parts has started to disintegrate (which is disappointing as I've always kept it clean) and there is an air bubble underneath. Your video inspired me so I opened it up thinking it had to be the internal air pressure that was causing the bubble, but no. I think it's just the rubber expanding and forming a dome. There is some evidence of tooth paste ingress but it's so little that I doubt it caused any issues. I wish I could buy a replacement casing.
yes sadly this is the case especialy with white/blue type of genius x tootkbrushes.. you can look for a defect toohbrush on eBay and get a housing from there.. dont think that there will be any source for new housings sadly..
Thanks. Nice video. After taking my toothbrush apart I discovered that the miniature surface mount momentary button switch was worn out. I soldered on a new switch and it works like new.
Thanks for this useful video. Unfortunately I think a nearby lightning strike has caused a pulse in the charging coil strong enough to fry the charging circuit, because the brush will now blink its charging light once or twice and then ‘crash.’ The charging light stays off or on until I push the button. The brush itself still works. Perhaps I can hack together a way to charge it via USB, but I think I'll just buy a new one and keep this one for spares… and put the new one in a metal box when there's another storm.
Well, I was about to hack this thing to make it chargeable via USB, and I tested it once more, and surprise: it works again! Must have been a polyfuse that took a long time to reset after the surge. So, if your toothbrush behaves like I described above, don't panic and wait a few days, it might ‘heal’ by itself.
Thanks for sharing, my toothbrush was not working after it fell to ground. A humming sound was coming from it so the motor was working. I tried to move the assembly above motor several times in every direction and it worked. Maybe the contact point moved when it fell to ground.
My toothbrush suddenly, for no reason, started to refuse to accept charge today. Followed this video and sorted in 15 minutes (though I do have a soldering iron already). Those wires for the charging coil must be a super common failure. £50 saved on a new one. I do have two chargers and two toothbrushes so was easy to identify this brush as the failure point.
Thank’s, mine wasn’t charging, took apart nothing broken turned out at the charging point where spring goes in contaminated (toothpaste?) quick clean with earbud sorted👍
glad you found the problem.. although contamination shouldn't affect the charging coil as it is isolated.. additionally if you found toothpaste on the bottom part it could be that you have a hole in the bottom cap as membrane was damaged? if that's the case you need to seal it. best would be to replace the bottom cap as membrane allows for some moisture to escape the housing without it it can damage the electronics even more,,
Help, your video although great didn't show me my issue. It did help me get it open however. My issue the lights turn on but the motor doesn't come on. I checked and the motor turns freely. It is a model 3760. Any help or suggestion would be great.
I have the genius x. Mine stars for very few seconds and stops. I opened it and ‘shorted’ the positive with the motor and works perfectly. I dont know what is wrong!
Hello and thanks for the information! I haven't found my answer in comments or multimeter, yet :) Basically with a 3.6v battery, when I push the button I get flashing red battery light. When I put it on the charger, nothing. I'm suspecting the chip on the board as there is nothing obviously shorted, and the resistor you mentioned seems to read normal, the fuse too.....Although I don't have another one to compare values. Any Ideas?? Thanks
3.6 is low.. you can charge battery externally up to 4v. Then check if charger is charging at all maybe charging coil is damaged.. there are a lot that could be wrong so you need to check what is working to eliminate options...
@@letsfixitgarage Thank you for your reply =) I´m going to try to get another unit or a lot so that I can do a bit more comparison. The coil seems fine, it has continuity....Next time I put it back together I´ll try it with the battery at 4v and see if it makes any difference. Will also try shorting the fuse, just to make sure! As I slowly learn more about electronics hopefully my diagnosis skills get better =) People like you really help!!
Difficult to say what was done to it but I would inspect the metal part with spring and it's contact to the motherboard that's responsible for to much pressure indication.. something was done to it during repair..
When you buy them the instructions tell you how to open these to dispose of the cell when throwing away. You put on charger and twist the base. I have opened a number of them. Much easier than vice grips and screwdrivers!.
Thanks for your input! I wouldn't always trust manufacturer on these things as example Philips suggests opening its toothbrush using a hammer to destroy the housing and then remove the battery :) if it's easier to twist it, sure use this method, I found this method less harmful for the end cap clips. And purpose of the video was repair tips on internals, not opening..
Hello, Great video! My model# 3765 has a problem you didn't mention. The electrical bits work perfectly, but The metal vibrating tip just snapped off in my hand, right at the little notch. Now the brush head won't stay on. Is this part replaceable? Or is this thing headed for the "extra parts" bin?
Doubt it.. don't think any epoxy will hold in that place.. I saw few of these defects but it is quite rare.. try to get a defective similar model toothbrush and Frankenstein a working one ;)
Sadly didn't had this toothbrush in my hands... Thought to make a technical comparison of tooth brushe insides.. what topics would be interesting to know? What brands to compare?
@@letsfixitgarage the Bitvae seems to be a popular newcomer to the market, especially on Amazon, they're cheaper than the Oral B but with outstanding battery life. So it would be interesting to see their design, repairability and durability against the Oral Bs. Just purely from curiosity.
Yes there are a lot of Chinese brands that are good or bad copies of more expensive ones.. will try to make a video for this kind off comparison when I will have more of them but one problem that I see with Xiaomi brand toothbrushes that they use their own rubber seal and there is no replacement as spare part... So that would be one big minus point from my side :)
My toothbrush has an intermittent problem. Sometimes it works fine, other times it will not turn on at all. It does not make any noise when this happens. Could it be the on/off button?
I feel some smell (smell of a working motor) from the shaft side and think the seal is broken there. Is it possible to change the seal if it is broken? or could it be a totally different reason? do the water leaked into inside totally damage the things?
It could be some buildup inside of the shaft that makes some friction and smell.. seal is quite reliable in these brushes and fails rarely but when water gets inside usually no chance of repairing as there is a lot of debris in transmission and a lot of rust buildup..
I have an Oral-B 3772 that has been dropped a few times. The housing has a 1" (2.54cm) longitudinal crack at the base of the toothbrush. Even with the crack, it was working fine but recently it started to work by itself while I was in another room. I was not able to turn it off so I let it run and eventually it stopped. After opening the I noticed the charging coil wire was broken just before reaching the soldering point. I soldered the coil to the 2 points but I am not sure I did it correctly. I wasn't able to find a wiring diagram online.
Well charging coil is only 2 wires there is no polarity on them. So soldering it in should have fixed it.. but if there is a crack in the housing it could be that moisture buildup inside is making additional problems..
Hi. My oralb starts on its will. Randomly any time and it stops itself. I opened it and cleaned it with wd40. The problem still stays. What must be done? Thanks in advance
Please don't use WD40 on electronics.. only isopropyl alcohol for cleaning the boards... I would start testing with the on/off button if some moisture got inside you need to replace it or take it apart and clean it. If the damage is on the board it would mean more testing.. additionally to be sure you would need to take the board off to test if there is no damage on the back side...
Very useful content!! Thank you so much. It would be great if you can recommend one model to buy as The genius X model stopped working and I will return it for a refund. Now I don’t know what to buy as a replacement 😅
I have a video how to fix genius X most common problem, after that repair its quite reliable brush. or check Philips sonicare, I like these better for more repair possibilities, but they do tend to get water inside more than braun..
I have an oral B braun 3772 that stopped working one day while I was using it. I put it back on the charger and it still blinks green when I do that. When I press the power button even months without charging, it makes this quiet beep noise. Does this symptom sound similar? I'm guessing that the beep that happens when i click the power button means that the power button is functioning. Thanks!
It could be exactly what I was showing in this video. Motor brushes are stuck and all you need is to rotate the motor gear to free it up.. try to open it up and see if motor rotates freely.
My 3 year old Oral-B toothbrush starts without any issues but can no longer be stopped. It has only one button that turns it on or off. The only way to turn it off is to put it in the charger. Have you encountered this problem?
I had one similar case.. it had a huge solder blob on the button leg that was shorting it to the diode next to it. It was a manufacturing defect but the brush was relatively new... It's gonna be definitely a defect on the motherboard.. so some electronics knowledge and soldering will be needed..
I would suggest water damage.. you need to open it up and inspect inside for water.. if present there is a lot of cleaning with alcohol. And sometimes if there is a lot of damage in motor it's not repairable sadly..
Mine has just developed a similar problem. I take it off the charger and I can't get it to work no matter how many times that I press the switch. I'll leave it sitting and 15 minutes later it spontaneously starts working. Then, I can't get it to stop no matter how many times that I press the switch. The only way to stop it is to put I on the charger! At least, I now know how to open it up.
Mine even got worse when I opened it before opening: motor not moving (only a little sometimes), charges, battery appears to be full. After opening no lights, motor not stuck and battery gives out 4v and fuse has 3,6 ohm and it still seems to charge suggestions?
Hello, thanks to you and your videos I have already managed to fix a few brushes, thank you very much. I have a problem with one Genius 3771 brush. if it discharges to 3.4v, it no longer wants to be charged. the red LED flashes and when placed on the charger, the white light is on that it is charging. I've already replaced the battery but that didn't solve the problem. Maybe you have an idea what could be the cause? Thanks Paul
Well electronic components do fail time after time.. haven't had this kind off defect but if you have another working brush on hand try to go from the coil up and check all components on the way with multimeter.. could be bad solder point or some element is bad.. check the charging chip in diode mode.. hope this helps!
How does a person check the battery, and if bad, replace it? Mine seems to be showing just over 1 volt, even after the charge cycle completes. Thanks...
Depends what kind of battery you have li-ion should be 4-4.1v when full and don't go less then 3v in normal conditions. Ni-mh on the other hand is 1.2-1.3v at full if I remember correctly don't recall what is low on these..
when you open up Oxyjet + pro 3000 brush system you get see a black box in which AC wires go in and a red and back wire comes out, probably a AC to DC converter, do you know what voltage that black box puts out ? marking on it type:153783
difficult to say... for this you would need to take it apart and look for some clues.. but you could damage the bottom cap by taking it apart so if it works just charge it every week..
Hello! I'm watching your video from Ukraine, Kharkiv. Pls help me if you can. I got a problem with Oral B type 3771. So she lights, but no vibrations... I was change a PP fuse (thx for your repair video) and she works with all modes, but I checked it again before assembling it to make sure it was working and it stopped showing signs of life completely. That's, it doesn't even lights now :((. What could be the problem?
I have "Oral-B Genius X" and it stops working.. It stopped, but i turn off.. turn on.. it turns little bit ( few spins ).. than stopped.. than i took off brush part and try it without.. the same.. So i leave it for few minutes.. and turn it on.. it works.. but... only in "low power modes" ( you can switch modes, works on "feather icon" mode ) usualy i had it on "default" ( fastest possible lol ) but now over the sudden it stops when is on that high power spins.. when i switch it it stops.. it doesn't matter i can run it in slow mode.. but i thinking maybe that will stop one day too.. ( just guessing ). Also i tried without brush head to put finger or "hold" that metal part which shakes when it works.. it doesn't stop it works perfectly but i notice sometimes ( when i bought it ) when i reach it in certain places while brushing my teeths it shows red light and keep spinning, now that doesn't happen.. So i tried it with low mode ( feather icon ) works in my hands perfectly with and without brush head.. but "sometimes" when i brushing my teeths.. if gets that "higher pressure" on brush ( usualy when it lights that red lamp ) it stops working again.. So does someone knows what is the problem? I apologies, idk where to ask this, was thinking in latest video :o Toothbrush is old 1 year and 2 months now.. lol
Well you have two solutions. Because it's not 2 years old you can use your warranty and it will be replaced with a new one. The other good news that you almost found a video with solution to your problem ;) check my other videos there is a video about genius X repair. there's your solution, but it involves soldering. And yes with time even sensitive mode will stop working.
@@letsfixitgarage Thank you so much! Now i am in position.. where i can get new one.. which probably will fail again how first failed.. can happen after 6 months or 1 year.. and again i will be in the problem lol.. Do you maybe know what "part" ( that little thing ) i need to exchange ( to solder ) how is that called..I can just buy it and replace it.. I thinking that is little bit more permanent solution and i will not deal with the new one too.. because let's face it.. it will fail too lol.
Yes my Genius is doing the same. You are lucky, yours is still in warranty. Mine is 2 years and a month, so no warranty for me. I’ve got mine opened up, but not sure if I want to mess with this thing.
Do you know what it could be for my braun 3676 no lights when try turn on on when put on charger as well no lights on brush,left for 30min charger was bit warm bit still no lights no turn on,it could be battery dead?
@vaidasdosas ... yes I an be the battery or if you dropped it can be te wires to ! The only thing you can do is disassemble and test battery and wire connection etc. Regards
Just desolder the 2 terminal points and charging coil. If you want to preserve Battery nickel strips (they are interestingly formed) removal of motherboard helps if no just pull it out in to direction of charging coil.
Dropped my brush and it just does a beep noise when i try to start it. All things were in place and i tried to rotate motor and it rotates freely so i dont know why it isnt working, any ideas?
@@letsfixitgarage thanks for the response. Both gears (small and big) are rotating, but ive noticed onething. Above the small golden gear there is like a coil and a white surface underneath the coil. Is the coil and small gear supposed to touch eachother?
@@lolbeno10 if I understand correctly the described part is a spring that pushes the shaft back up if you press it. It's not connected to the gear. What you can try is to apply 3-4v to the motor contacts if it rotates problem is on the motherboard and not the drive..
@xitgarage Tried doing what you did on 13:05 with the current resistor. i put the tweezers around a glass thing (on the brush) and it started shining red for some reason. i did it again and it was red, tried to start it and now i dont hear any beep sound and it seems like the brush isnt even charging. Any ideas? appreciate your response.
Shorting something on PCB with tweezers is not a good strategy.. you can easily burn or short something including main chip.. you can try removing battery power from PCB maybe it will reset it but it could be a deeper problem where specific electronic repair knowledge is needed. Not possible to share it through comments..
Thank you! I just fixed my non-charging model 3765, it was just a loose wire as you indicated. I would also like to share that I found this other video that provided way easier instructions to remove the base just soaking it in hot water. I didn't even need to force it or use a screwdriver to pry it open after the soak. I suspect this may not work for every brush, but it did for mine. th-cam.com/video/9mCaSk08Bp0/w-d-xo.html
hi. my oral b pro 2 2500n buzzes one time (and vibrates) then stops and the battery light blinks in red.I have already charged it where it was blinking green till it stopped charging. Do you think this is the same issue where the gear is stuck then it cuts off?
If it vibrates then no, motor spins freely. Something is wrong either with battery or charging circuit. Open it up and measure battery voltage after it's fully charged and when you turn it on and it goes to empty..
Still if there is movement on the shaft it means motor is spinning. As you can hear in this video its only slight sound if the motor is blocked. Anyways for repair you need to open it up then you can check motor and other things, I would inspect battery and charging circuit in this case
@@letsfixitgarage opened up my toothbrush and the inside is rusted hence the motor is stuck. i did loosen it with your method but currently yet to check the battery as i dont have a voltage measure machine. any tips on waterproofing if a get a new unit? Also, i removed the internal part by pushing out from the head but i find it hard to reattach back the black o-ring on top as i cant push it down from the top as the unit itself sinks a few mm into the casing when i do so. perhaps you can show the rest how.
Difficult to say why water got in in the first place. From what I saw I got impression that Braun waterproofing is better than Philips as I saw much lower percentage water damaged Braun toothbrushes.. don't have any specific tips for Braun brushes for additional waterproofing.. as for getting the ring back ok yes sometimes its struggling sometimes gets on quite easily.. try pushing from different sides like rotating the ring. Sometimes pushing down with pliers from two sides helps.
in reverse order. if the end cap will get damaged there could be a bigger gap at the bottom but it should preserve the water tightness. if it breaks off completely then you will need to find a replacement..
Just found your video and trying to troubleshoot. I am a very beginner in electronics but i'm not scared to learn. When i press the button nothing happens. Found that bypassing the power regulator (just as you did at 13:06) makes my toothbrush work, but i got stuck at this point. Any tips on a fix?
@@letsfixitgarage Thank you for the faith you have in me! But 10000% i cannot do it :( my precision skills and eyesight are horrible, so replacing a small IC is a nope.
😢It would have been better if the handle had been in the middle of the picture. I would only disassemble one handle, the change is irritating, otherwise it was informative. Thanks
Привет. Спасибо за очень полезную информацию. В моем случае 3 шт одинаковых щётки (с Bluetooth) перестали заряжаться. Проверил все провода и пайки - все в норме. Зарядил батарею - все работает, но не заряжается. Всё 3 щётки одинаковые. Зарядная станция работает 100%. В чем может быть проблема?
Didn't had this kind of defect, so very difficult to suggest something. I still have some of these models unrepaired brushes if I will come across something with charging I will make a video.
Well there is your answer ;) motor has to turn free by hand. look the part where I hit the toothbrush with a Hammer. Motor "brushes" have welded to the collector and need to be broken free.. it's a delicate procedure but should be ok. Motor has a metal gear on it try to slightly hammer with some thin tool on it. By the way how did it happened that it stopped? I still can't understand in what conditions it welds it self...
You are armature. This not the way opens the oral-b. First off you need to tap in hot water for 5 minutes. Then with back of the charger you open with clockwise rotation and then the hot water must help you to push the head and that is all. It is simple and child make t done without damage the toothbrush. You need to ask oral-b for certification, service manual, etc...
Amateure yes, armature hopefully not :D hot water helps with genius X series brushes, they have different case material, as I suggest in genius X repair video. Have you opened this model brush as you describe it? I tried warming it up with boiling water, it didn't help with this model brushes. additionaly cap is oval shape not sure how do you want to rotate it cold or warm... And as far as I know there is no service from Braun for any brushes, would it be these, genius or even expensive IO... So I really doubt that you have certification or service manuals. But please, prove me wrong.
Every time I switch mine on, the red sensor light at the top comes on.. And nothing else moves?.. It charges too.. But soon as the power button is pressed, it triggers the sensor light without any movement.
Difficult to say.. I would first open it up to examine if there is no water damage inside.. then you could try to remove battery power from motherboard to reset it..
![Oral-B Braun diş fırçası pil değişimi [ Oral-B Braun toothbrush battery replacement ] #oralb](/img/n.gif)
This is such a helpful video, it fixed my Oral B toothbrush by using brute force to unjam the gear, thank you so much!😊
Thanks! Motor was humming since I thought batter was under voltage. Thanks to your video, I realized it was a stuck gear. I got it freed and lubed so now it's working 😊
It was the same for me. It is probably a design feature that is causing the problem.
It would be interesting to get some feedback how this issue starts when you use the brush. Regularly.. my assumption was that you hold the toothbrush rotating head or it gets stuck and In that case motor cannot turn it and fuses to the brushes... But as I o don't use them difficult to figure out the scenarios when it happens...
Very helpful, just repaired two toothbrushes with exactly the same problem: broken charging wire. One addition is really necessary however: when reassebling you should first remove the top cap. After inserting the core into the 'house' the top cap can be replaced with the help of a wrench or so.
Method of opening very informative, brilliant. Good points raised on different problems and how to fix them.
Definately make good and re-use video👍🏻well done, keep them coming.
Thanks for your feedback I am quite surprised how this evolved and all the positive comments.. made few more videos but I'm missing the time for editing.. excuses, excuses... :)
This was very helpful, my Oral B due to stuck gear, used a screwdriver and a hammer to unjam it. Thank you very much for making this video :)
Udało się naprawić. Wystarczyło ruszyć te tryby. Dziękuję. Jesteś wielki. Pozdrawiam
I thought these things were potted shut! Was useful to find that you can actually disassemble it. Thanks!
Mine had a bearing ring of some kind break in the top, which had leaked in water and then started rusting.
So all electronics still worked but I couldn't know until I completely destructively disassembled it.
Oh well. New toothbrush is also nice and I know I at least tried :)
The chisel method worked for me. My pro 1000 toothbrush froze after it was dropped. I had to hammer the metal gear a few times before it broke loose. Thank you very much.
Thanks a million! The hammering works! I used a small screw driver and hit the black gear connected to the motor shaft with my palm and it set the gears in place and worked! Oral B 3000
Thanks buddy. With your help I repair toothbrush my wife 😁
repairing wife things is worth double in karma points ;)
Thanks! Fixed it with your tips well before getting to the end of the video. (Simple solder of the charging wire fixed it)
Excellent!
Thank you for this video, very clear advices and tips ! It helped me to repair two toothbrushes.
Glad it was helpful and thanks for the feedback!
Amazing! Mine stopped moving after i dropped it. Gear was indeed stuck. Works perfectly again.
Thanks for this comprehensive video!
My Pro 1000 (1 month out of warranty!) was “stuck” just as you described, and a judicious application of a hammer got it going again.
You have to wonder what causes this to happen so often. Looks like it really needs better brushes!
An added note about this model. The base is much easier to remove: there is a soft rubber portion on the edge of the cap, marked by a dimple. It’s easy to press there and pry the cap up.
This happens when you use metal instead of carbon brushes :) but I believe carbon dust could be even bigger headache.. so compromises...
I 've been using this tooth brush for 5 years now. It still works but the rubber parts has started to disintegrate (which is disappointing as I've always kept it clean) and there is an air bubble underneath. Your video inspired me so I opened it up thinking it had to be the internal air pressure that was causing the bubble, but no. I think it's just the rubber expanding and forming a dome. There is some evidence of tooth paste ingress but it's so little that I doubt it caused any issues. I wish I could buy a replacement casing.
yes sadly this is the case especialy with white/blue type of genius x tootkbrushes.. you can look for a defect toohbrush on eBay and get a housing from there.. dont think that there will be any source for new housings sadly..
Looks like a lightsaber repair video.
very helpfull information. I have one with a faulty current shunt resistor.
Hammer technique worked a treat! Thanks
Thanks. Nice video. After taking my toothbrush apart I discovered that the miniature surface mount momentary button switch was worn out. I soldered on a new switch and it works like new.
Lol I never thought that hammering the toothbrush will work, but indeed it does the trick, thanks a lot.
Thanks for this useful video. Unfortunately I think a nearby lightning strike has caused a pulse in the charging coil strong enough to fry the charging circuit, because the brush will now blink its charging light once or twice and then ‘crash.’ The charging light stays off or on until I push the button. The brush itself still works. Perhaps I can hack together a way to charge it via USB, but I think I'll just buy a new one and keep this one for spares… and put the new one in a metal box when there's another storm.
Well, I was about to hack this thing to make it chargeable via USB, and I tested it once more, and surprise: it works again! Must have been a polyfuse that took a long time to reset after the surge. So, if your toothbrush behaves like I described above, don't panic and wait a few days, it might ‘heal’ by itself.
Depends on the model but if you have Genius toothbrush it could be that your fuse is failing. check my other video on Genius repair..
Thanks for sharing, my toothbrush was not working after it fell to ground. A humming sound was coming from it so the motor was working. I tried to move the assembly above motor several times in every direction and it worked. Maybe the contact point moved when it fell to ground.
The chisel method was needed for mine, thanks for the fix
one more save! nice ;)
My toothbrush suddenly, for no reason, started to refuse to accept charge today. Followed this video and sorted in 15 minutes (though I do have a soldering iron already). Those wires for the charging coil must be a super common failure. £50 saved on a new one.
I do have two chargers and two toothbrushes so was easy to identify this brush as the failure point.
Thank’s, mine wasn’t charging, took apart nothing broken turned out at the charging point where spring goes in contaminated (toothpaste?) quick clean with earbud sorted👍
glad you found the problem.. although contamination shouldn't affect the charging coil as it is isolated.. additionally if you found toothpaste on the bottom part it could be that you have a hole in the bottom cap as membrane was damaged? if that's the case you need to seal it. best would be to replace the bottom cap as membrane allows for some moisture to escape the housing without it it can damage the electronics even more,,
Thanks, I fixed my toothbrush, which was not working because of a stuck gear after falling into the sink a couple of times.
Thanks for the comment and a hint why this can be happening ;)
Easier way to open is to put a drill bit in the charging port hole and lever forwards and backwards
Thank you so much ! I was having the same issue with the motor stuck! Gonna try your brute force method 😅
Follow up ! I barely touched the metal gear and the toothbrush worked like a charm !!! Thank you so much
Brute force method :)))) nice
thanks for this complete video
Help, your video although great didn't show me my issue. It did help me get it open however. My issue the lights turn on but the motor doesn't come on. I checked and the motor turns freely. It is a model 3760.
Any help or suggestion would be great.
I think I answered to your email but if someone else is looking for answer check my other video on Genius repair.
I have the genius x. Mine stars for very few seconds and stops. I opened it and ‘shorted’ the positive with the motor and works perfectly. I dont know what is wrong!
Have you checked my other video on genius X repair? Could be similar ;)
Hello and thanks for the information! I haven't found my answer in comments or multimeter, yet :)
Basically with a 3.6v battery, when I push the button I get flashing red battery light. When I put it on the charger, nothing.
I'm suspecting the chip on the board as there is nothing obviously shorted, and the resistor you mentioned seems to read normal, the fuse too.....Although I don't have another one to compare values. Any Ideas?? Thanks
3.6 is low.. you can charge battery externally up to 4v. Then check if charger is charging at all maybe charging coil is damaged.. there are a lot that could be wrong so you need to check what is working to eliminate options...
@@letsfixitgarage Thank you for your reply =)
I´m going to try to get another unit or a lot so that I can do a bit more comparison.
The coil seems fine, it has continuity....Next time I put it back together I´ll try it with the battery at 4v and see if it makes any difference. Will also try shorting the fuse, just to make sure! As I slowly learn more about electronics hopefully my diagnosis skills get better =) People like you really help!!
Hi, your videao was helpfull. I put everything together and now the red light on top of the brush is constantly on. How can i Fix this? Thanks
Difficult to say what was done to it but I would inspect the metal part with spring and it's contact to the motherboard that's responsible for to much pressure indication.. something was done to it during repair..
@@letsfixitgarage already fixed it. It was indeed the metal part that was bend to much. All is working again. Thanks
When you buy them the instructions tell you how to open these to dispose of the cell when throwing away. You put on charger and twist the base. I have opened a number of them. Much easier than vice grips and screwdrivers!.
Thanks for your input! I wouldn't always trust manufacturer on these things as example Philips suggests opening its toothbrush using a hammer to destroy the housing and then remove the battery :) if it's easier to twist it, sure use this method, I found this method less harmful for the end cap clips. And purpose of the video was repair tips on internals, not opening..
Could I send mine to you to fix? I’ve had it for 10 years. The only problem is the power is not as strong as it used to be. Still works and charges.
It's possible write me to letsfixitgarage@gmail.com
Hello, Great video! My model# 3765 has a problem you didn't mention. The electrical bits work perfectly, but The metal vibrating tip just snapped off in my hand, right at the little notch. Now the brush head won't stay on. Is this part replaceable? Or is this thing headed for the "extra parts" bin?
Doubt it.. don't think any epoxy will hold in that place.. I saw few of these defects but it is quite rare.. try to get a defective similar model toothbrush and Frankenstein a working one ;)
I'd be very interested for you to compare this to Bitvae's rotating toothbrush.
Sadly didn't had this toothbrush in my hands... Thought to make a technical comparison of tooth brushe insides.. what topics would be interesting to know? What brands to compare?
@@letsfixitgarage the Bitvae seems to be a popular newcomer to the market, especially on Amazon, they're cheaper than the Oral B but with outstanding battery life. So it would be interesting to see their design, repairability and durability against the Oral Bs. Just purely from curiosity.
Yes there are a lot of Chinese brands that are good or bad copies of more expensive ones.. will try to make a video for this kind off comparison when I will have more of them but one problem that I see with Xiaomi brand toothbrushes that they use their own rubber seal and there is no replacement as spare part... So that would be one big minus point from my side :)
I shot lubricant into the gear to get it moving. I couldn’t decide on oil or graphite… so i did both 🤪 works for now
My toothbrush has an intermittent problem. Sometimes it works fine, other times it will not turn on at all. It does not make any noise when this happens. Could it be the on/off button?
I would first check battery solder points. Saw multiple with broken off battery leads so sometimes it touches and works sometimes it has no power..
I feel some smell (smell of a working motor) from the shaft side and think the seal is broken there. Is it possible to change the seal if it is broken? or could it be a totally different reason? do the water leaked into inside totally damage the things?
It could be some buildup inside of the shaft that makes some friction and smell.. seal is quite reliable in these brushes and fails rarely but when water gets inside usually no chance of repairing as there is a lot of debris in transmission and a lot of rust buildup..
@@letsfixitgarage Thank you for the reply.
I have an Oral-B 3772 that has been dropped a few times. The housing has a 1" (2.54cm) longitudinal crack at the base of the toothbrush. Even with the crack, it was working fine but recently it started to work by itself while I was in another room. I was not able to turn it off so I let it run and eventually it stopped. After opening the I noticed the charging coil wire was broken just before reaching the soldering point. I soldered the coil to the 2 points but I am not sure I did it correctly. I wasn't able to find a wiring diagram online.
Well charging coil is only 2 wires there is no polarity on them. So soldering it in should have fixed it.. but if there is a crack in the housing it could be that moisture buildup inside is making additional problems..
Thanks @@letsfixitgarage
Hi. My oralb starts on its will. Randomly any time and it stops itself. I opened it and cleaned it with wd40. The problem still stays. What must be done?
Thanks in advance
Please don't use WD40 on electronics.. only isopropyl alcohol for cleaning the boards... I would start testing with the on/off button if some moisture got inside you need to replace it or take it apart and clean it. If the damage is on the board it would mean more testing.. additionally to be sure you would need to take the board off to test if there is no damage on the back side...
@@letsfixitgarage thanks for ur help
Very useful content!! Thank you so much. It would be great if you can recommend one model to buy as The genius X model stopped working and I will return it for a refund. Now I don’t know what to buy as a replacement 😅
I have a video how to fix genius X most common problem, after that repair its quite reliable brush. or check Philips sonicare, I like these better for more repair possibilities, but they do tend to get water inside more than braun..
@@letsfixitgarage Thanks a lot 🙏
I have an oral B braun 3772 that stopped working one day while I was using it. I put it back on the charger and it still blinks green when I do that. When I press the power button even months without charging, it makes this quiet beep noise. Does this symptom sound similar? I'm guessing that the beep that happens when i click the power button means that the power button is functioning. Thanks!
It could be exactly what I was showing in this video. Motor brushes are stuck and all you need is to rotate the motor gear to free it up.. try to open it up and see if motor rotates freely.
My 3 year old Oral-B toothbrush starts without any issues but can no longer be stopped. It has only one button that turns it on or off. The only way to turn it off is to put it in the charger.
Have you encountered this problem?
I had one similar case.. it had a huge solder blob on the button leg that was shorting it to the diode next to it. It was a manufacturing defect but the brush was relatively new... It's gonna be definitely a defect on the motherboard.. so some electronics knowledge and soldering will be needed..
Hello, my toothbrush turns itself on without anyone touching it. Do you know what causes that ? Thanks.
I would suggest water damage.. you need to open it up and inspect inside for water.. if present there is a lot of cleaning with alcohol. And sometimes if there is a lot of damage in motor it's not repairable sadly..
Mine has just developed a similar problem. I take it off the charger and I can't get it to work no matter how many times that I press the switch. I'll leave it sitting and 15 minutes later it spontaneously starts working. Then, I can't get it to stop no matter how many times that I press the switch. The only way to stop it is to put I on the charger! At least, I now know how to open it up.
The same suggestion would be teu here as well.. open it apart if water inside that's your answer.. if not check the button..
Mine even got worse when I opened it before opening: motor not moving (only a little sometimes), charges, battery appears to be full. After opening no lights, motor not stuck and battery gives out 4v and fuse has 3,6 ohm and it still seems to charge suggestions?
Try to remove one of the battery contacts from motherboard for short time.. to reset it..
@@letsfixitgarage seems tricky everything is well solderd
Hello, thanks to you and your videos I have already managed to fix a few brushes, thank you very much. I have a problem with one Genius 3771 brush. if it discharges to 3.4v, it no longer wants to be charged. the red LED flashes and when placed on the charger, the white light is on that it is charging. I've already replaced the battery but that didn't solve the problem. Maybe you have an idea what could be the cause? Thanks Paul
Well electronic components do fail time after time.. haven't had this kind off defect but if you have another working brush on hand try to go from the coil up and check all components on the way with multimeter.. could be bad solder point or some element is bad.. check the charging chip in diode mode.. hope this helps!
How does a person check the battery, and if bad, replace it? Mine seems to be showing just over 1 volt, even after the charge cycle completes. Thanks...
Depends what kind of battery you have li-ion should be 4-4.1v when full and don't go less then 3v in normal conditions. Ni-mh on the other hand is 1.2-1.3v at full if I remember correctly don't recall what is low on these..
@@letsfixitgarage Thanks
My oral b triumph 3762 quadrant timer not working every 30 seconds, do u kno why?
Difficult to say you could try to reset it by removing battery contact for few second maybe it will be enough to get it back in working order..
@@letsfixitgarage OK thank u!!
when you open up Oxyjet + pro 3000 brush system you get see a black box in which AC wires go in and a red and back wire comes out, probably a AC to DC converter, do you know what voltage that black box puts out ? marking on it type:153783
sorry don't have this system..
hi i have a new one model 3766 and it appears to work fine, powers on works but no LEDs at all, i cant tell if its charging or not. how do i fix it?
difficult to say... for this you would need to take it apart and look for some clues.. but you could damage the bottom cap by taking it apart so if it works just charge it every week..
Hello! I'm watching your video from Ukraine, Kharkiv. Pls help me if you can. I got a problem with Oral B type 3771. So she lights, but no vibrations... I was change a PP fuse (thx for your repair video) and she works with all modes, but I checked it again before assembling it to make sure it was working and it stopped showing signs of life completely. That's, it doesn't even lights now :((. What could be the problem?
reset the board by shorting reset pin or removing power for few seconds.
I have "Oral-B Genius X" and it stops working.. It stopped, but i turn off.. turn on.. it turns little bit ( few spins ).. than stopped.. than i took off brush part and try it without.. the same.. So i leave it for few minutes.. and turn it on.. it works.. but... only in "low power modes" ( you can switch modes, works on "feather icon" mode ) usualy i had it on "default" ( fastest possible lol ) but now over the sudden it stops when is on that high power spins.. when i switch it it stops.. it doesn't matter i can run it in slow mode.. but i thinking maybe that will stop one day too.. ( just guessing ). Also i tried without brush head to put finger or "hold" that metal part which shakes when it works.. it doesn't stop it works perfectly but i notice sometimes ( when i bought it ) when i reach it in certain places while brushing my teeths it shows red light and keep spinning, now that doesn't happen.. So i tried it with low mode ( feather icon ) works in my hands perfectly with and without brush head.. but "sometimes" when i brushing my teeths.. if gets that "higher pressure" on brush ( usualy when it lights that red lamp ) it stops working again.. So does someone knows what is the problem? I apologies, idk where to ask this, was thinking in latest video :o Toothbrush is old 1 year and 2 months now.. lol
Well you have two solutions. Because it's not 2 years old you can use your warranty and it will be replaced with a new one. The other good news that you almost found a video with solution to your problem ;) check my other videos there is a video about genius X repair. there's your solution, but it involves soldering. And yes with time even sensitive mode will stop working.
@@letsfixitgarage Thank you so much! Now i am in position.. where i can get new one.. which probably will fail again how first failed.. can happen after 6 months or 1 year.. and again i will be in the problem lol.. Do you maybe know what "part" ( that little thing ) i need to exchange ( to solder ) how is that called..I can just buy it and replace it.. I thinking that is little bit more permanent solution and i will not deal with the new one too.. because let's face it.. it will fail too lol.
That's an smd fuse 1-2 amp, should be ok. 2-3mm in lentght would be easier to solder 4mm is possible as well.
@@letsfixitgarage I appriciate, thank you for the help... you are amazing!
Yes my Genius is doing the same. You are lucky, yours is still in warranty. Mine is 2 years and a month, so no warranty for me. I’ve got mine opened up, but not sure if I want to mess with this thing.
Do you know what it could be for my braun 3676 no lights when try turn on on when put on charger as well no lights on brush,left for 30min charger was bit warm bit still no lights no turn on,it could be battery dead?
@vaidasdosas ... yes I an be the battery or if you dropped it can be te wires to !
The only thing you can do is disassemble and test battery and wire connection etc.
Regards
I haven't see how to replace the battery.Any thoughts?
Just desolder the 2 terminal points and charging coil. If you want to preserve Battery nickel strips (they are interestingly formed) removal of motherboard helps if no just pull it out in to direction of charging coil.
Dropped my brush and it just does a beep noise when i try to start it. All things were in place and i tried to rotate motor and it rotates freely so i dont know why it isnt working, any ideas?
just a gues but check the gear on the motor shaft maybe the gear broke and thats why you are able to rotate it but motor itself is still stuck..
@@letsfixitgarage thanks for the response. Both gears (small and big) are rotating, but ive noticed onething. Above the small golden gear there is like a coil and a white surface underneath the coil. Is the coil and small gear supposed to touch eachother?
@@lolbeno10 if I understand correctly the described part is a spring that pushes the shaft back up if you press it. It's not connected to the gear. What you can try is to apply 3-4v to the motor contacts if it rotates problem is on the motherboard and not the drive..
@xitgarage Tried doing what you did on 13:05 with the current resistor. i put the tweezers around a glass thing (on the brush) and it started shining red for some reason. i did it again and it was red, tried to start it and now i dont hear any beep sound and it seems like the brush isnt even charging. Any ideas? appreciate your response.
Shorting something on PCB with tweezers is not a good strategy.. you can easily burn or short something including main chip.. you can try removing battery power from PCB maybe it will reset it but it could be a deeper problem where specific electronic repair knowledge is needed. Not possible to share it through comments..
Как снять блокировку схемы после замены аккумулятора на щетке с красным текстолитом oral b vitality кроме как установив его на зарядку ?
Any help or advice for disassembly of the type 3733 version?
Sorry didn't had this kind of brush in my hands.. where are you from? Are they popular in that country?
Thank you! I just fixed my non-charging model 3765, it was just a loose wire as you indicated. I would also like to share that I found this other video that provided way easier instructions to remove the base just soaking it in hot water. I didn't even need to force it or use a screwdriver to pry it open after the soak. I suspect this may not work for every brush, but it did for mine. th-cam.com/video/9mCaSk08Bp0/w-d-xo.html
hi. my oral b pro 2 2500n buzzes one time (and vibrates) then stops and the battery light blinks in red.I have already charged it where it was blinking green till it stopped charging. Do you think this is the same issue where the gear is stuck then it cuts off?
If it vibrates then no, motor spins freely. Something is wrong either with battery or charging circuit. Open it up and measure battery voltage after it's fully charged and when you turn it on and it goes to empty..
@@letsfixitgarage sorry vibrate was the wrong word. It buzzes once only
Still if there is movement on the shaft it means motor is spinning. As you can hear in this video its only slight sound if the motor is blocked. Anyways for repair you need to open it up then you can check motor and other things, I would inspect battery and charging circuit in this case
@@letsfixitgarage opened up my toothbrush and the inside is rusted hence the motor is stuck. i did loosen it with your method but currently yet to check the battery as i dont have a voltage measure machine. any tips on waterproofing if a get a new unit? Also, i removed the internal part by pushing out from the head but i find it hard to reattach back the black o-ring on top as i cant push it down from the top as the unit itself sinks a few mm into the casing when i do so. perhaps you can show the rest how.
Difficult to say why water got in in the first place. From what I saw I got impression that Braun waterproofing is better than Philips as I saw much lower percentage water damaged Braun toothbrushes.. don't have any specific tips for Braun brushes for additional waterproofing.. as for getting the ring back ok yes sometimes its struggling sometimes gets on quite easily.. try pushing from different sides like rotating the ring. Sometimes pushing down with pliers from two sides helps.
Thanks!
Thank you for the 🍺 appreciate it :)
So how do you reassemble it?
in reverse order. if the end cap will get damaged there could be a bigger gap at the bottom but it should preserve the water tightness. if it breaks off completely then you will need to find a replacement..
Love u
Just found your video and trying to troubleshoot. I am a very beginner in electronics but i'm not scared to learn. When i press the button nothing happens. Found that bypassing the power regulator (just as you did at 13:06) makes my toothbrush work, but i got stuck at this point. Any tips on a fix?
You can do it!
@@letsfixitgarage
Thank you for the faith you have in me! But 10000% i cannot do it :( my precision skills and eyesight are horrible, so replacing a small IC is a nope.
I got the 9n model but the ON button dont work any more what to do😢
Replied to you with few tips in original video/comment..
😢It would have been better if the handle had been in the middle of the picture. I would only disassemble one handle, the change is irritating, otherwise it was informative. Thanks
Well this was more of a summary video of all, to me, known defects not repair of one handle..
Привет. Спасибо за очень полезную информацию.
В моем случае 3 шт одинаковых щётки (с Bluetooth) перестали заряжаться. Проверил все провода и пайки - все в норме. Зарядил батарею - все работает, но не заряжается. Всё 3 щётки одинаковые. Зарядная станция работает 100%. В чем может быть проблема?
Didn't had this kind of defect, so very difficult to suggest something. I still have some of these models unrepaired brushes if I will come across something with charging I will make a video.
@@letsfixitgarage you are the best!
Cześć. Mam model oral b pro 2 2500, bateria naładowana, silnik nie startuje,. Szczoteczka robi krótki dźwięk "pii". Nic się nie swieci. Pomocy
That seems to be similar description as I showed in this video when motor is blocked. Can you rotate the gears by hand?
Silnik nie kręci się i ręcznie też koła zębate się nie kręcą. Żadne światła się nie świeca. Jest samo piii pii
Well there is your answer ;) motor has to turn free by hand. look the part where I hit the toothbrush with a Hammer.
Motor "brushes" have welded to the collector and need to be broken free.. it's a delicate procedure but should be ok. Motor has a metal gear on it try to slightly hammer with some thin tool on it. By the way how did it happened that it stopped? I still can't understand in what conditions it welds it self...
You are armature. This not the way opens the oral-b. First off you need to tap in hot water for 5 minutes. Then with back of the charger you open with clockwise rotation and then the hot water must help you to push the head and that is all. It is simple and child make t done without damage the toothbrush. You need to ask oral-b for certification, service manual, etc...
Amateure yes, armature hopefully not :D hot water helps with genius X series brushes, they have different case material, as I suggest in genius X repair video. Have you opened this model brush as you describe it? I tried warming it up with boiling water, it didn't help with this model brushes. additionaly cap is oval shape not sure how do you want to rotate it cold or warm... And as far as I know there is no service from Braun for any brushes, would it be these, genius or even expensive IO... So I really doubt that you have certification or service manuals. But please, prove me wrong.
Every time I switch mine on, the red sensor light at the top comes on.. And nothing else moves?.. It charges too.. But soon as the power button is pressed, it triggers the sensor light without any movement.
Difficult to say.. I would first open it up to examine if there is no water damage inside.. then you could try to remove battery power from motherboard to reset it..