Chosen Solution

When I slide the control to Noise Cancelling, headphone keeps shorting out and goes in and out between total noise cancel and regular sound. Any suggestions?

I found out that - as crazy as it may sound - in my case it had something to do with the battery brand I used. I normally use Duracells, but always found them a bit hard to insert into the slot (it was really hard to close the lid with the battery inserted), but never had any issues until recently I bought a new pack. Just for the sake of it I used a battery from a different brand - Varta in that case - and not only do these fit better: Noise cancellation works fine again! No more interruptions, problem solved! Best regards, Ralph

Hi Erica, have you tried replacing the batteries and or connecting to another device? Bose QuietComfort 25 Battery Replacement

I have a similar problem, but for me the problem is actually the button itself, just touching it triggers static and it keeps dropping the right channel regularly.