I'm a fan of the Bose headphones. Had a ae2i a little ago and a 3 years ago bought the QC35. And I loved it.
But since one and a half year i'm having a problem with cable connection. When a plug-in audio connection the right-side speaker goes out. Since I didn't find any forum talking about the cable connection I I decided to open and see if something physical was causing the problem. Incredibly I discovered a cable that's run from P2 entry to the electrical board was disconnected. The Weld was crack. Since I'm in Brazil, I don't have customer assistance were and decided to fix my self (not recommend). But I felt compelled to publish this discovered to help other with the same problem.