I have a pair of Sony Noise Cancelling headphones and one of the speakers died. My co-tenant is an electrical engineer and said he could repair them if I got the parts. So I paid for the parts and he installed them, all working fine except the speakers sound distant. He said they needed tuning and would do it after his exams. Fast forward a few months and now he has no intention of ever doing them.

So does anyone know a place in CHCH (or NZ via post) send these to get fixed properly? I can't afford new ones and they are very very important to me.

Thanks for your time guys.