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How do you detached the board ?

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

Easier way to open is to put a drill bit in the charging port hole and lever forwards and backwards

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.

where can i order a replacement button?

did you confirm the I7 and S9 base are the same other than the bottom plate?

Yes, it would be very nice to see the head disassembled to repair/replace the lock switch. Any ideas?

Hi, can you please show me how the power button can be replaced on the S9, as the one on mine has dropped out along with the spring and i have no idea how it goes back. Thanks

Hi, My series 9 LCD display is stuck on WET mode, when i switch the mode to DRY the head becomes fluid but the 'drop' icon still shows on the display and the trimmer doesn't seem to work now. Any idea how to fix this? Thanks !

Top man... I'm leaving the wife to her wares and am off to the garage to fix my K5 ...🎉

Hope you're allright, it's been a year.

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

Your toothbrush fixing videos are the best I found so far. I would like to ask, since I haven't figured that out. My toothbrush has weird symptoms, at first I thought, just replacing the switch and fixing the gap would be sufficient, but when I turn the brush on it turns off immediately, all lights off too, the same happens if I switch to any mode when turned off and then press the power button instead of starting just turns off, again all lights off, with very short, less than a second long buzz. However, when I desolder the motor coil, the brush stays on, when I connect the coil it turns off. What might be the problem? I don't have an induction meter, to measure the inductance of the coil, but it's hard to imagine with such thick lacquer there could be a short in winding. I have Sonicare Flexcare. Thank you for the great job with the videos.

Thank you for this video - it's super helpful. How did you take the bottom cap off of the Sonicare Prestige? It looks different than the other models but is it the same process of using pliers and a spacer?

The screw on the body of mine were rusted and snapped when opening it, any idea of the exact reference or type of screw? Seems to be T8 8mm long, but cannot find them anywhere.

I was able to open and fix the loose screw. However, once I connected everything back the power button was not working. I connected the flex cable and have tried disconnecting and reconnecting but no luck. Any recommendations? The toothbrush charges

It worked for me too ❤ Thanks for video 💪

Большое спасибо!

On mine IO9 the upper seal split, I wish they do sell the housing shell.

Thanks! Just heating the fuse on both sides was enough to get the voltage to 4 on both sides of the fuse. The toothbrush works again 👍

Hi, thank you so much for this video. Can you tell me where can I get these fuses, and is it possible to glue the fuse with super glue or something? Sorry, I don't know

I'd be very interested for you to compare this to Bitvae's rotating toothbrush.

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.

Copper coil came off bottom on prestige how can I fix/replace tried reconnecting

слишком сложно! супер клей + сода)

This video just saved me 200$, pried it open and applied some light pressure on the pp fuse and it started to work.

Such a useful video! Some water got into mine and it stopped working suddenly. That rubber seal at the toothbrush end disintegrates with time unfortunately so water goes in and damages the unit. Slight rust on the magnet, lime scale at the base of the head shaft, and some moisture on the circuit board. Not good. Infuriating low quality for a pricey toothbrush! So very grateful for your video. The issues I have with this video though is that your hand is covering up some key bits. Parts not shown well are: 1. 4:47 - The clips holding back the case rear cover. Show us a closeup of the tabs once you take it out, so we understand which way to loosen the tabs with a screwdriver. I spent half a day on this trying every possible way. You have to go on the LONG SIDE not short side, go behind the tabs and press in toward the center on both sides. Keep thin screwdriver in place while working on other side so both loosen same time, then you push on the head and it pops out. It is these little things that are important. 2. 4:43 - You don't show exactly how that center black rubber piece is removed and how it is one piece, not a covering to be peeled off. You bent the middle with toward the circuit board, then this piece pops out. Actually, I found you don't need to bend it which can damage the circuit board. The board slides back and forth on its tracks, making a gap to take this piece out. 3. Not shown is how the circuit board pops out, I am struggling there. The key is to slide the circuit board toward the battery. Once the center spring comes out, there is room to slide the circuit board back. Insert a fine flat screwdriver under the black plastic of the circuit board (not green plastic) and lift up the two tabs, one behind the other. Out it pops. You have to slide it down for the tabs to come out as the hole widens. I cleaned up the head shaft area too. A rubber cap on the shaft is torn in my case which led to water going in, so this should be inspected and replaced if you can find this part! Else, repair it or improvise to seal off the head from water. Thank you for a great video! I am hoping mine works after recharging.

Thank you. Super helpful.

Q: DW's Sonicare suddenly stopped working. In the charger, the battery indicator gives two quick green flashes followed by one yellow flash. The brush head vibrates as it does this. Battery problem or internal electronics?

Some units have a small hole in the end cap. With an air compressor, you can pressurize the case through the hole and the cap will pop out. No hole? Drill a 1/16 or 1.5mm hole with a hand drill. Do not go beyond the cap, which is only about 3mm thick at that point. CAUTION: As you do this, use your fingers to support the silicone seal at the brush head end. Otherwise, the air might pop a hole in the seal. Other units have a 6mm closed hole in the c=end cap. a 1/4-20 cap screw or bolt will thread into the hole with just enough grip to pull the cap off with zero damage.

This helped me.... Thanks.

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

little push from the side of the fuse with a small screw driver fixed my issue as well. . If not for your video I wouldn't have known what the fuse and where it is placed. Thank you so much for sharing. I had this problem in two toothbrushes. Both are working now. Thank you again for saving a lot of money.

Thank god for your video. Had the same problem. I disambled my toothbrush and put gently pressure on the fuse, and, it worked so far. But I look if I can get one fuse to change it. And my older Oral-B model was opened by turning the bottom. But the genius is different. Like you mentioned. 👍🫡

Hi, that's saved my Oral B Genius X 20000N worthy of 140 € and 4-years old! I just short circuited

How much A fuse does it needs to be?

Toothbrush off camer

My non-IO9 brush no longer charges... I didn't find any broken connections, the battery is fine... Do you have any suggestions on how to fix it?

Thank you for your instructive video. Because of you I was able to replace the ISC drive unit saving my favorite razor. Blessings to you! Thank you.😅

Thank you for this amazing video 😊

Lol I never thought that hammering the toothbrush will work, but indeed it does the trick, thanks a lot.

Me has ahorrado tener que comprar un cepillo nuevo. Muchas gracias.

Super. It works like a charm. This is the original fuse: MF-PSML300/6-2, PPTC SMD POLYMER PTC 3.0A/6.

Have io5 series, just stop to work, no lights on buttons, short lights appears when I put it on charge and push both buttons. Reset, battery remove, didn't affect. What could be a problem? Can new battery help with this issue?

Great video! One more question - on the shaver head there is a release button on the left and a lock button on the right. My lock button fell out. I tried to reinsert it but it’s loose and keeps falling out. How do I get it to stay in place?

Thank you now I know where to start mine is the 2.0 and had fallen off my table and after that I hadn't worked since but wash works I wasn't able to select cure and I didn't see any blown capacitors or burn marks on any of the boards.

Thank you for the video! Made it very easy to disassemble and clean the top part. The stuff that was cleaned out though 🤮

Thanks, I needed to replace the power button on my Series 8 and this video was great!

Küçük plastik parçayı unuttu ama yerine yerleştirmeyi.!!!!!!

Hi 19:28 you say the head has the side pieces that are not recomended to be taken out as they ahve springs to release the shaving head - one of mine came off when I dropped it, and I cant see how to reattach - pressumably the springs need to be correctly relocated somehow?