Hi there,
I've been using my M40 headphones fairly regularly since I got them just after Christmas. I normally don't use
the noise cancellation feature, but have discovered that it appears to be non operational now when I try turning
it on. There doesn't appear to be any physical damage to the unit at all , and all cabling appears on inspection to be intact across
the headband itself. It doesn't appear to be a flat battery, and the audio cuts out completely when switching the noise cancellation
on (which if I was being sarcastic, would be its normal function, right? ). Any help would be greatly appreciated.
cheers,
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