iFixit - Answers With Device "Bose QuietComfort 35"

Bose QuietComfort 35: Replacing battery in Bose QC35

Tue, 17 Mar 2020 22:10:01 -0700

I was wandering through the Internet to see if it is possible to disassemble to fix Bose QuiteComfort 35, as I don't like to buy unfixable electronics, and I was shocked with how little information I found regarding to fixing or disassembling those super-popular headphones.

I found the following tear-down on Reddit, and got to the conclusion that Bose made sure that it will be practically impossible to disassemble them without some heavy machinery:

What do you think? Will we see a tear-down anytime soon or is it a lost battle?

⟐ Commented March 17, 2020 at 22:10 MST

Bose QuietComfort 35: QC 35ii right side speaker not wrking.

Sun, 31 Dec 2023 15:43:53 -0700

from where can I get my QC 35ii fixed. right side speaker not working?

will appreciate your help.

thanks.

⟐ Commented December 31, 2023 at 15:43 MST

Bose QuietComfort 35: Left speaker only working intermittently, crackling noise with ANC

Sat, 18 Jan 2025 14:36:20 -0700

Hello good repair-inclined folks,

Recently, my Bose QC35 headphones have developed an annoying fault. At first, I noticed a crackling sound in the left speaker, which is motion-sensitive and linked to active noise cancelling (no ANC, no crackling). Later that day the left speaker kept dropping out.

Has anyone dealt with this? Is the driver shot? Any repair advice would be appreciated.

Thanks!

⟐ Commented January 18, 2025 at 14:36 MST

Bose QuietComfort 35: Bose QC35 audio connector is not working

Mon, 03 Mar 2025 10:58:49 -0700

Bose qc35 audio doesn’t work when I plug in the audio cord. Bluetooth works just fine but when I plug the cord in it does not work. I have tried other cords to see if that’s the problem and it still doesn’t work. This leads me to believe that the connector in the headphones is not working properly. (I am plugging it in all the way). If I wiggle the cord in the connector I can hear audio sometimes. I have been reading on the bose forum that this is a common problem.

I understand that the Bose qc35s is not a current model and if the Bluetooth audio still works then this question may not be that important. However, I use these headphones Plugged In every day for music, work, and conversations online. I love these because I wear them for long periods of time and they still feel like I am not wearing anything. I use them plugged in because I hate the latency and much worse sound that you get using Bluetooth. Because these are not the current model they are not under warranty and the answers that I got from support were to ship these back to Bose and spend 200 dollars on a discounted price for a newer model. I just want to fix these if I have the ability. Your time would be greatly appreciated with any advice. Thank you

⟐ Answered March 03, 2025 at 10:58 MST

Bose QuietComfort 35: Replacement screws for over ear Bose Q35 headphones.

Fri, 23 Jul 2021 05:08:21 -0700

The screw to my ear piece fell out and now the earpiece is separated from the frame. Where do I get replacement parts.

⟐ Answered July 23, 2021 at 5:08 MST

Bose QuietComfort 35: QC 35 I turns itself back on

Tue, 20 Oct 2020 07:18:25 -0700

My QC35-I turns itself back on after a few minutes. I have found similar reports online. I believe it is due to a faulty power switch. I am not sure if the power switch needs replacing or cleaning. Can anyone help?

⟐ Answered October 20, 2020 at 7:18 MST

Bose QuietComfort 35: How do I change the battery?

Wed, 08 Mar 2023 04:23:04 -0700

How do i change the battery?

⟐ Commented March 08, 2023 at 4:23 MST

Bose QuietComfort 35: Replace the micro USB port to a USB -C one?

Sat, 01 Jul 2023 12:07:26 -0700

Hi, is it possible to do so? Have someone already done it? I wonder if it is possible to do it easily to not have to deal with multiple connectors. That is one of this headset’s flaws.

Thanks.

⟐ Commented July 01, 2023 at 12:07 MST

Bose QuietComfort 35: How do I replace the circuit board power switch?

Fri, 19 May 2023 17:50:57 -0700

I’m talking about the switch connected to the circuit board, not the plastic red/green cover that you manipulate from the outside of the headphones. What is the procedure for replacing the broken switch itself? Is welding required?

⟐ Commented May 19, 2023 at 17:50 MST

Bose QuietComfort 35: Can you repair foam padding cover material?

Tue, 22 Oct 2019 09:41:33 -0700

I use these headphones a lot, and the material covering the padding on the right ear has ripped open and the foam is expanding out. I dont want to have to sew it myself and I was wondering if i could have this repaired or can I get trade in value. They were $250 and I love them dearly. Any tips would be much appreciated.

⟐ Commented October 22, 2019 at 9:41 MST

Bose QuietComfort 35: How to stop them turning 'ON' on their own?

Mon, 03 Feb 2025 23:37:12 -0700

Even if I switch them off, they turn ON back again after few seconds.

⟐ Answered February 03, 2025 at 23:37 MST

Bose QuietComfort 35: Does this also apply to QuietComfort 35 II, or are they incompatible?

Wed, 26 Apr 2023 16:06:21 -0700

Hi,

Does this repair guide (and the battery that's available to buy) also apply to the QuietComfort 35 II, or is the repair process different on that one?

⟐ Answered April 26, 2023 at 16:06 MST

Bose QuietComfort 35: One of the earpads can rotate a full 360 degrees where it used to stop

Fri, 26 Mar 2021 19:04:29 -0700

As stated in the title, one of the earpads on my Bose QC 35 II headphones can rotate a full 360 degrees of motion. It does not make any clicking sound in doing so and rotates smoothly without any extra force applied. The other one has limited rotational ability. Is there some way that I can fix this myself?

⟐ Answer accepted March 26, 2021 at 19:04 MST

Bose QuietComfort 35: Battery draining even when switched off

Thu, 29 Sep 2022 13:21:22 -0700

I bought a pair of faulty qc35 headphones that wouldn’t hold a charge for long. This is a common problem and I usually just replace the battery. That didn’t work with this pair, I can’t find any obvious faults or shorts on the board. Anyone know where I should be looking for issues?

Thanks in advance 👌🏾

Bose QuietComfort 35: Bose Qc35 power switch

Sat, 05 Jun 2021 03:21:14 -0700

Hello someone knows where i can buy the replacement for the power switch?

⟐ Answer deleted June 05, 2021 at 3:21 MST

Bose QuietComfort 35: My left side stopped working

Thu, 26 Sep 2019 17:59:46 -0700

The left side of the headphones stopped working. If I start walking or move the left side audio cut out or just stop making noise. Some times, if I move my headphones the audio will be back. Once the audio cuts out, the noise-canceling also cut out.

Bose QuietComfort 35: Can replace the foam piece thats over the ears?

Thu, 24 Apr 2025 14:12:27 -0700

My foam or cushion piece is damaged. Can the part be replaced?

⟐ Commented April 24, 2025 at 14:12 MST

Bose QuietComfort 35: Right hand speaker no sound

Fri, 04 Apr 2025 00:27:57 -0700

So I bought a set of know faulty QC35 for the purpose of harvesting them for parts. But I thought I would try and fix them first.

Did a search and found some other question thread, but it didn’t help unfortunately -
- QC 35ii right side speaker not wrking.

So when I turn them on I am only hearing sound from the left speaker. Ive popped the r/h pod cover off, unplugged and re-seated the ribbon cable, no change. The cable from the speaker/s to the main pcb on that side appears to be physically fine.

So before I start further disassembly, can I ask if anyone else has had the same no-sound issue from the r/h pod and if so what was the fault and the fix..?

thanks.

⟐ Answer accepted April 04, 2025 at 0:27 MST

Bose QuietComfort 35: Can I replace qc 35 full body because my whole headphone has broken

Sun, 17 Sep 2023 17:14:54 -0700

Can I replace qc 35 full body because my whole headphone has broken

⟐ Answer edited September 17, 2023 at 17:14 MST

Bose QuietComfort 35: Can I source and replace the right side hinge between headband and ear

Tue, 30 Aug 2022 16:39:20 -0700

The hinge on the right side of my Bose Quiet Comfort 35 is broken. I've barely used these due to the lock down, but with warranty expired the only option on offer is a $300 replacement pair :) Can I source and replace the right side hinge between headband and earpiece?

⟐ Commented August 30, 2022 at 16:39 MST