I own a sony str-k740p home cinema amp and speakers, recently the centre channel started buzzing, almost like a digital sound, like the sound that a modem makes. Anyway, a few days later the sub woofer sound went completely and then the rear speakers went.
I have tested all the cables and they are all fine, i tested all the speakers and they all work, so i've narrowed it down to the amp.
Has anyone else had this problem? did you get it fixed? how much should i expect to pay if i take it to a sony repair shop?