iFixit - Answers With Device "Electric Toothbrush"

Braun Oral-B Type 3771: Motor starts, then stops immediately.

Sat, 05 Sep 2026 03:28:21 -0700

The Oral- B Brain type3711 seems to have motor issue. Holds charge, battery indicates full charge. The option selector works. But when I power on, it briefly turns on at very lower power then stops.

⟐ Answered 九月 05, 2026 at 3:28 GMT-7

Philips Sonicare FlexCare: Why won't my toothbrush turn on?

Thu, 03 Sep 2026 10:35:06 -0700

I have tried charging my brush, but no matter what the toothbrush will not turn on. The charger works fine on my other brush that came with the set.

⟐ Commented 九月 03, 2026 at 10:35 GMT-7

Oral-B Plak Control Ultra Type 4713: Cannot turn on, been on charger

Tue, 01 Sep 2026 15:24:28 -0700

Can’t turn on

⟐ Commented 九月 01, 2026 at 15:24 GMT-7

Philips Sonicare FlexCare: Beeping, one long, two short

Fri, 28 Aug 2026 14:00:17 -0700

My trusty Sonicare has started beeping in a repeating pattern while charging. It still works, but only occasionally. Is this fixable or do I need to buy a new one? It is by far the best toothbrush I have ever had, so I don't want to just discard it without attempting a fix or knowing I need a new one.

⟐ Answered 八月 28, 2026 at 14:00 GMT-7

OralB iO: The grey drive cylinder came out of the toothbrush — is it repairable?

Fri, 21 Aug 2026 19:42:03 -0700

The grey drive cylinder came out of the toothbrush — is it repairable?

⟐ Commented 八月 21, 2026 at 19:42 GMT-7

Oral-B Black 7000: Runs down and stops in about a second

Sun, 16 Aug 2026 04:39:18 -0700

My toothbrush runs down and stops in about a second. I fixed the problem a few months ago by unsoldering and then resoldering the battery. I have checked the battery voltage during the switch on, slow down and stop phase and it remains constant at about 3.7V so there would seem not to be a problem with the battery. When the problem occurred before I found that bypassing the MOSFET caused the motor to run normally at full speed, so this seems to be a microprocessor issue. I have tried resetting the brush by holding the power button for ten seconds. There is no water inside.

⟐ Commented 八月 16, 2026 at 4:39 GMT-7

Oral-B iO Series 5 Type 3776: Why doesn’t my toothbrush charge?

Thu, 11 Jun 2026 23:34:01 -0700

Why doesn’t my toothbrush charge? It’s an oral b io.

⟐ Answered 六月 11, 2026 at 23:34 GMT-7

Oral-B iO Series 6: Toothbrush splattering liquid as I brush

Thu, 11 Jun 2026 09:56:55 -0700

Sometimes as I am brushing, liquid (small splatters of toothpaste) flies out and gets on me , walls, floors, etc. I have tried cleaning the toothbrush well, but nothing seems to help

Philips Sonicare Toothbrush: Can you get mother board fuse for hx5390

Fri, 29 May 2026 02:21:31 -0700

Can you get mother board fuse for hx5390

OralB iO: Why it doesn't charge properly?

Thu, 28 May 2026 10:46:19 -0700

It seems to be charged. It syncs, and it shows on the app to be fully charged. Then it stops working and back to 0

⟐ Commented 五月 28, 2026 at 10:46 GMT-7

OralB iO: Replacement battery .1 volt less than original.

Mon, 18 May 2026 08:53:03 -0700

Original battery labeled 3.7 volts. Replacement battery labeled 3.6 volts. Will that be an issue?

Philips Sonicare FlexCare: Why is the toothbrush making so much noise?

Mon, 11 May 2026 07:25:32 -0700

The toothbrush is making much more noise than it did when it was new.

⟐ Commented 五月 11, 2026 at 7:25 GMT-7

Oral-B Vitality: Oral-B Vitality Type 3709 only works for few minutes

Sat, 09 May 2026 16:26:16 -0700

Hi. I have this weird issue with new old stock of this 3709 model where it would work for few minutes or maybe longer without brush head attached. When it nearly starts to act up, the toothbrush is behaving like the battery is nearly empty where the metal end vibrates very weak until it stops. When it stops, I could hear some sort of humming sound. I tried to move the metal end left and right, it seems like the motor inside is struggling to work. It feels like it's trying to move to vibrate, but it failed.

I let the toothbrush off for few minutes and after that, it starts working again at full speed like fully charged battery until few minutes of using it that the metal end gradually gets vibrate weaker and eventually stopped working again. Note that I didn't put it in the charger. I let it cool down for a while and the cycle repeats. Hopefully someone can help me. Thank you.

⟐ Answer edited 五月 09, 2026 at 16:26 GMT-7

Oral-B Type 3710: How do I tell if it’s charging?

Sat, 21 Mar 2026 05:12:45 -0700

This toothbrush came with a plug in stand but I do not see any type of charging indicator light? It literally looks like it’s just for show?!

⟐ Answered 三月 21, 2026 at 5:12 GMT-7

OralB iO: display not working anymore

Tue, 10 Mar 2026 16:45:49 -0700

I have this issue...my toothbrush io 9 display has stoped working but everything else working fine....i open it an and found water inside...this could burn the display? can it be fixed?

⟐ Answered 三月 10, 2026 at 16:45 GMT-7

Philips Sonicare DiamondClean HX9340: Tip loose and broken off(?) possible to fix?

Sun, 08 Mar 2026 12:10:50 -0700

Hello,

I woke up this morning and was going to brush my teeth but as I was brushing the brush head came off and I saw that the small metal tip that you attach the brush too had come loose, see attached pictures.´

http://i.imgur.com/JHrre5O.jpg http://i.imgur.com/i1H7kgN.jpg

Any way to fix this?

⟐ Commented 三月 08, 2026 at 12:10 GMT-7

Phillips Sonicare 9350: Philips Sonicare HX9350 electric toothbrush

Sun, 22 Feb 2026 02:16:34 -0700

Electric toothbrush Philips Sonicare HX9350 works very loud? It became very Noisy

⟐ Commented 二月 22, 2026 at 2:16 GMT-7

Braun Oral-B Type 3771: Oral-B Braun Toothbrush Motor Not Working

Wed, 15 Jul 2026 12:32:54 -0700

I have the following toothbrush: Oral-B Braun Genius X Type 3771

The toothbrush can be fully charged, battery lights are working normally. It can be switched on, all indicator lights are working, pressure sensor light is working fine, timer light is also working.

The problem only is that it just won’t spin/vibrate. I’ve replaced to a new toothbrush head, but still doesn’t work. No humming/sound from the body at all.

I am willing to attempt to repair it by myself. My questions are:

I’m suspecting motor problem inside, is this correct?
Is it repairable?
Is there a guide?

Thanks for your time. Hope you’d help me out.

⟐ Edited 七月 15, 2026 at 12:32 GMT-7

Oral-B iO Series 3 Type 3769: Braun Oral B io3 type 3769 Not rotating, only vibration

Thu, 12 Feb 2026 07:29:27 -0700

Should my toothbrush rotate as it only vibrates?

Please advise?

OralB iO: No series number found on 3758 oral b io

Tue, 10 Feb 2026 00:45:59 -0700

Where is the series number on 3758? I don’t see one anywhere so I don’t know which replacement brush to get. A week spent trying to find a tooth

⟐ Answered 二月 10, 2026 at 0:45 GMT-7