iFixit - Answers With Device "Bose Headphone"

Bose QuietComfort 20i: Bose QC20i will not power on or charge after power surge - Troubleshooting board-level damage

Tue, 14 Jul 2026 18:34:15 -0700

My Bose QuietComfort 20i headphones stopped working entirely after a power surge occurred while they were charging. Currently, they will not power on and show no indicator lights when plugged into a USB power source.

I have already opened the control module to inspect the internals. The battery (PR-452035) appears to be dead, but I suspect the surge may have damaged the charging circuitry or the Power Management IC on the board.

Has anyone successfully diagnosed or repaired a QC20 board after a power surge? Are there specific protection diodes or fuses on this board that commonly fail in this scenario? I have a multimeter and soldering iron ready if there are specific components I should test for shorts.

Bose SoundSport Free wireless: Is there a guide how to open the bose charging case?

Sat, 27 Jun 2026 12:29:58 -0700

I have made custom earbuds for my Bose Soundsport Free wireless and they do not fit into the charging case.

I want to check if it is possible to remove some material in the for the custom made earbuds without interfering with battery or functions by the case itself.

⟐ Answer edited June 27, 2026 at 12:29 MST

Bose SoundLink Headphones: Screw type/size for Bose SoundLink AE2 headphone

Sun, 21 Jun 2026 01:21:39 -0700

I need help identifying the screw driver required to disassemble Bose SoundLink AE2 headphone. I can see it is hex but there is a bump in the middle.

In the picture, left one is the one I am trying to deal with while on the right is the screw from Asus UX303UA laptop for size comparison (same distance).

⟐ Commented June 21, 2026 at 1:21 MST

Bose QuietComfort 35: Continuous beep from right ear after battery R&R on Bose QC35.

Tue, 09 Jun 2026 13:41:35 -0700

After replacing the battery, there’s a continuous beeeeep from right ear on my Bose QC35 headphone. I turn it off and at times it continous, at times it doesn’t, but when on it beeeps all the time. I can still hear what’s playing on the left ear piece.

⟐ Commented June 09, 2026 at 13:41 MST

Bose Quiet Comfort 35 II: The earphone hinges are broken

Sun, 31 May 2026 06:53:57 -0700

Hello,

I now have my headset for about 4 years and past summer the right hinge connecting the ear piece and head piece broke off. It just snapped in half i think but i can't get a clear look inside and i don't know if it is possible to fix this part. In the meantime i have bought a new headset but this one was still working perfectly so i want to know if its salvageble.

Bose Noise Cancelling Headphones 700: The charging port on the headphone melted

Mon, 11 May 2026 12:16:24 -0700

Basically, the charging port (usb-c port) on the headphone has melted and it’s not working now. How can i get it repaired

⟐ Commented May 11, 2026 at 12:16 MST

Bose QuietComfort 15: My battery does not seem to be making contact inside the headphones

Wed, 22 Apr 2026 12:11:52 -0700

I purchased these about a year ago, so the warranty is out. Already checked for normal things like wires disconnected, and corrosion. I did a thorough cleaning with vinager and still nothing. Then I noticed when I put the battery in, and pushed down hard on the top, the green light came on. This worked a few times, and am wondering why it is doing that. Recently I had them sitting on a table, no drops or falls to cause something to be dislodged…

⟐ Commented April 22, 2026 at 12:11 MST

Bose SoundLink Headphones: Where is the battery

Fri, 10 Apr 2026 12:38:42 -0700

I can't find the lithium rechargeable battery on these headphones. Is it in the right or left ear piece. No info on Bose site. Runtime is down to 20 minutes

⟐ Commented April 10, 2026 at 12:38 MST

Bose On-Ear headphones: The left ear is not giving audio

Thu, 09 Apr 2026 13:39:43 -0700

My left ear cup suddenly didn't give sound anymore, however, if I push the cup to my ear, the pressure that builds up makes it work again, but only when there is pressure applied to the earcup, Anny suggestions as to how to fix it?

Bose QC25 on ear headphones

My issue has been solved, the paper solution was temporary. I contacted them and they gave me a new pair right away :D

⟐ Commented April 09, 2026 at 13:39 MST

Bose QuietComfort: The output jack is Broken

Fri, 06 Mar 2026 19:53:30 -0700

The output jack doesn’t work, how do I fix it?

⟐ Commented March 06, 2026 at 19:53 MST

Bose QuietComfort 45: Startup sequence doesn't work (very irregular)

Fri, 06 Mar 2026 09:35:23 -0700

When I try to start my headphones, the power indicator just flashes very briefly and dimly. The NC activates for a little bit, but the startup sound doesn't play, and the NC sometimes shuts down again. When I toggle the power to the off position, the light flashes more brightly, and the bluetooth connection and shutdown sounds are played before turning off.

If I hold down the power switch when starting, it sometimes makes the indicator light stay on, and very occasionally do the headphones boot up (maybe every 20 tries or so), but sometimes they stop working again immediately.

See this video for an example: https://www.youtube.com/watch?v=YzvnaKmj...

I opened them up and checked for anything off, but I can't see any corrosion or any loose cables/connectors.

⟐ Commented March 06, 2026 at 9:35 MST

Bose Quiet Comfort 35 II: How do I replace the rubber rims?

Sun, 08 Feb 2026 01:46:55 -0700

Last month i noticed that brittle rubbers on the outside of cushion started to break away.

I couldn't find what it is called anywhere or anyone here addressing it.

Does anyone know what is it or where to buy it?

including a photo below:

⟐ Answered February 08, 2026 at 1:46 MST

Bose Sport Earbuds: It wont reset and keeps blinking red and white

Wed, 28 Jan 2026 05:31:15 -0700

Need help with finding what battery i need to switch or what I can do to fix them

Bose Sport Earbuds: Left speaker doesn't wrk

Sun, 18 Jan 2026 22:38:01 -0700

Left earbud doesn't charge and flashes multi colored lught

Bose QuietComfort 45: Why my Bose QC45 is static on left side?

Mon, 22 Dec 2025 02:24:19 -0700

Why does my bose headphones have a popping sound/ static noise on the left side when it is powered on by Bluetooth?

I tried to use wired cable that both speaker were playing sound fine without powering on. I tried to power on with wired cable to heard a sound distorted sound on the left side speaker and right speaker was low volume.

Is this a power issue or hardware issue on my headphones? I tried resetting, and updating. I could not figure what’s wrong with my headphone.

Bose Sport Earbuds: Charging Magnet got stuck

Fri, 12 Dec 2025 13:28:01 -0700

My right side earbud charging Magnet got stuck inside the case and not that is not coming out due to that both the earbuds are not charging I want to disassemble the case want to take the Magnet out so that earbuds can be charged

⟐ Answered December 12, 2025 at 13:28 MST

Bose Frames Alto: Bose Frames won’t take a charge

Thu, 13 Nov 2025 23:36:45 -0700

Frames won’t take a charge. Tried a new charging cable. Suspect the battery is bad, but no info anywhere on if/how it can be replaced. Any ideas or suggestions would be greatly appreciated. Thx!

⟐ Commented November 13, 2025 at 23:36 MST

Bose SoundSport: Adhesive / Glue needed for in-ear Bose Soundsport headphones

Wed, 12 Nov 2025 13:58:57 -0700

I have a pair of Bose Soundsport in-ear headphones. After a year or so, the rubber / silicone cover that protects the on/off button & usb charging port from sweat and water has come un-glued.

Where can I find replacement adhesive for this purpose? I need your help please.

Thank you.

Mirage

⟐ Commented November 12, 2025 at 13:58 MST

Bose Quiet Comfort 35 II: How to replace the internal battery?

Sun, 26 Oct 2025 20:34:09 -0700

I have it for some years and the battery's duration is reducing as it's expected from rechargeable batteries. It's not lasting enough hours to use it for work. I have several online meetings so I need to replace the internal battery to make it last at least 8h of continuous use.

⟐ Answered October 26, 2025 at 20:34 MST

Bose QC20: Losing sound as I adjust them.

Mon, 13 Oct 2025 04:44:37 -0700

They have a false contact as I try to adujst the size over my head. I have to open them up and check if the wire is cut or lose. The problem it's the band over the head seems like it is all glue together. Difficult to open with out cutting it.