How to fix power to Bose QC2 headphones

"RKEW



Rep: 253




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Fixed my my Bose Quiet Comfort 15 that would not power up! Fortunate because the battery wire broke at the solder point on the battery door. Did not need to disassemble anything, just wiggled the door loose. Removed 1" insulation from a piece of junk wire, twisted the strands. Soldered, not to the door, but to the base of the spring. Then re-installed door, trimmed wire to about 5/8", crimped it to the end of broken one and soldered that. No need for any insulation, here. Difficult to get door closed but WORKS - at least until the next battery. I SHOULD have put a little heat shrink, not for insulation, but for strength. FYI: although my unit is many years old. my local (USA) Bose store will replace with refurb for $120.

"Hi, i had the same problem that told ""RKEW"" , the cable wich have to make contact with the negative polo where is the battery is not making contact, because the cable is very short. I opened all the headphone and i saw others cables thats are going to break.... i cant belive it because i paid 300 dollars for this.

Here is the photo of the problem:

So, i have to weld the cable or replace it(s) and clean the contacts where the cables born because i saw sulphate."

This photo shows where I soldered the negative wire on the QC15 headphones and it worked.

The power light on my Bose QC15 headphones went out after many hours of use of an AAA battery. I just figured it was time to change the battery. I had a difficult time removing the battery and finally had to pull it out with needle nose pliers. When I put in a new battery, the power light would not come on. After reading some posts here, I tried to clean the battery casing with a dry Q tip, then water, and then 40% ethanol without success. Then I rubbed the casing thoroughly with the eraser of a new no. 2 pencil, blew out the interior with a compressed air canister and presto!, the power light came on.