[intlsubband]

I had my PSB's for 14 months and absolutely love them, they were my primary mobile headphones and I used them almost every day.
 
Then without warning over the weekend, the left ear cup died. It started to stutter for a couple of minutes, and since then, total silence.
 
I just can't explain it, it wasn't hit or anything, I tried to change cables and tried various sources, nothing but complete silence from the left ear.
 
Did this happen to anyone? any advice on what can be done?
 
Thanks everyone in advance!