Yamaha RX-V1065 problem - hiss noise on center and front left channels
I first noticed the hiss a few months ago but just assumed it was a bad connection or interference from nearby cables - but last night I disconnected everything to investigate.
The problem: white/static noise on the center and front left channels. It doesn't matter what volume or which input, sound processing system, spearker set up or even which speaker is plugged into the channel - I get the same thing noise.
How it manifests: It's not so noticable when watching movies in pure direct mode with lots of volumne but its the quite bits or just watching TV recorded on the PVR that it becomes really noticable.
My investigation: I disconnected every source and evey speaker, pulled out the amp and straightened out the power cable. Nothing else nearby was on. I first connected my center speaker to every output then did the same with one of my front speakers - the same thing.
Background: My set up means a separate Cyrus Pre/Power combo runs the font L/R using the pre-out with the amp driving a 6ohm center speaker and two 8ohm surround speakers. The power cable was tied up but I do try hard to keep source, power and speaker cables seperate.
I've had the amp about 3 years but it doesn't get used that much - only two or three times a week at the most.
Any ideas? Is it back to Yamaha or is this something my favourite hifi shop could fix?