iFixit - Answers With Device "Philips Sonicare Toothbrush"

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

Wed, 17 Jan 2024 21:57:22 -0700

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

⟐ Commented January 17, 2024 at 21:57 MST

Philips Sonicare FlexCare: Beeping, one long, two short

Wed, 20 Aug 2025 08:51:59 -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.

⟐ Commented August 20, 2025 at 8:51 MST

Philips Sonicare DiamondClean HX9340: I Believe I Have Discovered a Defect In Design

Fri, 20 Nov 2020 05:10:56 -0700

The upper spindle on which the brush snaps into place appears to be constructed partially of plastic. While the brush is vibrating it rubs against a metal portion, especially when the user is pressing the brush against his teeth. My toothbrush now does not operate. Once even the slightest pressure is applied to brushing my teeth the vibration ceases. If no pressure is applied, as in not touching my teeth with the brush, the toothbrush vibrates as it should. This is poor design for the obvious reason - one has to apply pressure and in doing so the plastic part deteriorates making the electric toothbrush useless. Is this a know defect? Can I get my expensive toothbrush replaced? have you made alterations in your latest version?

Thank you,

Brian Rodgers

⟐ Commented November 20, 2020 at 5:10 MST

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 March 08, 2026 at 12:10 MST

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

Thu, 08 Jan 2026 02:46:55 -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 January 08, 2026 at 2:46 MST

Philips Sonicare DiamondClean: What is U2 ic?

Mon, 09 Jan 2023 18:18:22 -0700

The fuse F1 on my brush gets blown when I turn it on. When replaced, I can charge the brush, all LED come on and U2 IC gets super hot. I assume this one drains a lot off current, tripping the fuse. I can’t find any information on what the IC is. On my toothbrush that IC has IU2FJ on it, another has IU2GG on it. I was looking for a 6 pin TSOP IU2 IC, but can’t find anything. I assume is some kind of power management IC.

⟐ Commented January 09, 2023 at 18:18 MST

phillips sonicare 4300 (HX680C): Battery Type and Swap Instructions

Sat, 22 Nov 2025 20:30:44 -0700

Which battery does this one use? On mine it says P/N 300005878501 and its colored green.

⟐ Commented November 22, 2025 at 20:30 MST

Philips Sonicare DiamondClean HX9340: Toothbrush turns on by itself

Thu, 16 Oct 2025 11:02:52 -0700

My sonicare diamondclean is turning on and running through settings by itself ?can it be fixed

⟐ Commented October 16, 2025 at 11:02 MST

Philips Sonicare DiamondClean: HX9360 can't turn on

Sat, 20 May 2023 03:25:59 -0700

I measure the battery about 3.8V.(F1 /R6 point).So I think the battery is fine.

But I push the button can't turn on it.But put into the cup can charge the battery.

So how do I to check the board or more action?

thanks

⟐ Commented May 20, 2023 at 3:25 MST

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 February 22, 2026 at 2:16 MST

Philips Sonicare Elite: How do I fix the power button

Fri, 15 Aug 2025 21:00:31 -0700

The power button has progressively become harder and harder to operate until it is completely impossible to turn the brush on now.

⟐ Commented August 15, 2025 at 21:00 MST

Philips Sonicare DiamondClean: My sonicare toothbrush loses power

Tue, 23 Jul 2024 14:40:24 -0700

Hey my sonicare toothbrush sometimes works, sometimes doesn't turn on any lights. If I hit sink couple of times with side of bottom it will turn on (lights up) and will work but then again does not.

Rubber button is in perfect condition. Clicky as always and works 100% time if lights are on.

It's exactly 3 years old.

Also it seems it's more difficult to take it off the charger but if it's in "working mode" it will charge normally, maybe something about the magnet.

What can I do?

⟐ Answered July 23, 2024 at 14:40 MST

Philips Sonicare DiamondClean: Why does my toothbrush vibrate but won't turn on

Sun, 14 Jul 2024 06:04:29 -0700

When I go to hit the power button my toothbrush vibrates 3-4 times in sets of two but won't turn on and vibrate. No lights show or anything... Also, it won't charge when in the case or the glass cup. Is it a battery issue or what?

⟐ Answer edited July 14, 2024 at 6:04 MST

Philips Sonicare FlexCare: Replacement battery for HX9120

Wed, 24 Jan 2024 16:14:45 -0700

I'm looking to replace the battery in my Sonicare FlexCare HX9120.

Do you have a replacement battery for this model?

Thank you for your time,

Richard

⟐ Commented January 24, 2024 at 16:14 MST

Philips Sonicare DiamondClean: Securing metal shaft into metal housing

Sun, 04 Jun 2023 07:50:15 -0700

I've taken apart my Sonicare toothbrush to fix a loose connection and see that the straight metal shaft has completely dislodged from the metal housing piece. It can be reinserted, but is not secure, and thus slips out. How can I ensure a tight fit before reassembling? I'm not sure if the original was one piece and mine is simply broken, or if some sort of glue bond has been compromised. Thanks!

⟐ Commented June 04, 2023 at 7:50 MST

Philips Sonicare DiamondClean HX9340: Sonicare brush doesn't work even though lights are on.

Thu, 26 Apr 2018 12:44:38 -0700

Is there an inside battery that I might have to replace even though it is always plugged in?

⟐ Answer accepted April 26, 2018 at 12:44 MST

Philips Sonicare CleanCare HX3200: The brush head has gone so loose

Fri, 14 Feb 2025 09:13:26 -0700

The brush head has gone so loose

Philips Sonicare Toothbrush: Sonicare battery replacement without desolding it

Sat, 07 Sep 2024 01:14:28 -0700

Hello

Is there others Sonicare models like protective clean 6500 where you don't have to desold the battery ?

Thanks

Philips Sonicare DiamondClean: What magnetic motor assembly model is compatible with HX960K?

Wed, 24 Apr 2024 02:26:19 -0700

What magnetic motor assembly models are compatible with the Philips Sonicare model HX960K? I cant seem to find any replacement motor assembly parts compatible for this model only other models.

Philips Sonicare DiamondClean: Metal head attachment & metallic driver rotated resulting in noise

Wed, 29 Nov 2023 14:36:48 -0700

My Sonicare was suffering from one of the usual problems that the magnets and the metallic driver were too close and I had to increase the distance between the two (see description here) which was a rather easy fix. I have also ordered a new metal head including the plastic parts to again have a properly watertight toothbrush.

However, there is one remaining issue which results in a lot of noise. The triangular shaped part where the metal head is attached using a screw is rotated as shown in the image below (red arrow points to rotated triangular shaped part):

This is due to an issue "lower down" in the toothbrush where the metallic driver (blue arrow in image below) - which is directly connected/linked to the above mentioned "triangular shaped" part - is rotated as well.

By forcing quite a bit I can rotate it back to "normal" position, however, as soon as I switch on the toothbrush the whole thing gets stuck again in the rotated position.

My two possible explanations so fare are that a) the magnetic force in the two magnets has somehow changed which results in a rotation or b) there was some abrasion or similar on the surface of the metallic driver which results in this rotation.

Any ideas on how to fix this would be highly appreciated!