iFixit - Answers With Device "Braun Oral-B Toothbrush"

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 June 11, 2026 at 23:34 MST

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

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 May 28, 2026 at 10:46 MST

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?

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 May 09, 2026 at 16:26 MST

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 March 21, 2026 at 5:12 MST

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 March 10, 2026 at 16:45 MST

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 July 15, 2026 at 12:32 MST

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 February 10, 2026 at 0:45 MST

OralB iO: Internal cylinder broken and lost

Wed, 21 Jan 2026 09:31:12 -0700

The internal cylinder fell off and I lost it. Is it possible to replace it? Here is a comparison with a working one.

Braun Oral-B Type 3771: order a replacement battery for my

Tue, 13 Jan 2026 19:18:46 -0700

How do I order the replacement battery for my type 3771 oral b toothbrush

⟐ Answered January 13, 2026 at 19:18 MST

Oral-B Type 3772: The brush head won't stay on the handle, comes off when brushing

Mon, 12 Jan 2026 12:14:58 -0700

brush head won't stay on handle

⟐ Answered January 12, 2026 at 12:14 MST

Oral-B iO Series 5 Type 3776: The brush is not working

Sat, 03 Jan 2026 09:11:59 -0700

The brush first started to work and turn off by itself without touching it the I charge it after that it doesn’t work at all and when I put on the charger it didn’t light or charge

Braun Oral-B Triumph 9900: Is my 3757 Oral B toothbrush repairable? On button doesn't work

Fri, 19 Dec 2025 13:26:43 -0700

Yesterday my 3757 Oral B toothbrush worked fine; it was fully charged. This morning it worked briefly, then turned off, and finally the on button doesn’t work at all. I don’t know the age of this product—is it repairable?

⟐ Commented December 19, 2025 at 13:26 MST

Braun Oral-B Triumph V1 Type 3745: How to open the toothbrush and replace the battery

Thu, 11 Dec 2025 03:19:10 -0700

I wonder who to open the toothbrush and replace the battery. Is there a guide somewhere? Do I need a soldering iron for the battery? Thanks!

⟐ Commented December 11, 2025 at 3:19 MST

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

Sat, 29 Nov 2025 01:07:12 -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 November 29, 2025 at 1:07 MST

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

Tue, 11 Nov 2025 14:41:06 -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 November 11, 2025 at 14:41 MST

Oral-B Triumph V2 Type 3764: Where can you get Battery 3764 replacement?

Mon, 03 Nov 2025 20:34:05 -0700

Where can you get a replacement battery?

⟐ Commented November 03, 2025 at 20:34 MST

Oral-B iO Series 4 Type 3794: I dropped my toothbrush and it won't turn on anymore

Fri, 24 Oct 2025 12:23:14 -0700

Hi there, are there any tips on troubleshooting what the issue could be?

⟐ Answer edited October 24, 2025 at 12:23 MST