Troubleshooting Bose QC2 Noise Canceling Headphones

On Sunday, November 22, 2015 at 1:20:51 AM UTC-5, snipped-for-privacy@gmail.com wrote :

ned it up and tested the speaker by connecting it directly to an audio jack cable and it works. I also tested the continuity of the wires running fro m the left ear piece to the right, from one end of the external audio cable to the other, and of the wires running from the speaker to the circuit boa rd. If I directly connect an audio jack to the wires at the circuit board end, the speaker works so I don't think it's a bad solder there. Does anyo ne have any other suggestions? This is my first repair project so no sugge stion is too basic.

I expect that the circuit board is buggered. There is no direct connection between the audio input and the drivers themselves. Those are driven by the board output - which is a combination of the audio signal and the cancella tion signal(s). This may have to go back to Bose. Otherwise, you may have t o connect the input directly to the driver(s) Thereby obviating the cancell ation function.

Peter Wieck Melrose Park, PA