I'm having some problems with my AV receiver and I'm hoping someone here can help. I'll post the details inside.
In August I purchased a Yamaha Home Theater in a Box system. Specifically, I bought the YHT-760
system. It worked great for three months and then all of a sudden I'd get a lot of noise from my subwoofer. The way I decribe the noise is: imagine you're on stage and you have a microphone connected out to an am. Then you rub paper all of the microphone. I am getting a sound out of my subwoofer very similar to the sound the paper makes on the microphone as amplified by the sound system. Make sense?
So that's the sound in the sub. It's not always constant. sometimes it happens after a few hours of TV, but lately it happens whenever I have the sub plugged in. On top of that, the receiver has taken to turning itself off. I am told this is a circuit protection feature.
I have already brought the receiver in for repair and was told they fixed the problem by replacing a PCB. They tested it and returned it to me. Two days later, I got the sound from the subwoofer and then yesterday it started turning itself off again.
Yesterday I bought banana plugs to attach to the speaker wire into the sub. With those plagged in, I got the same sound. And, I bought one of these things
to see if it was a problem with my outlet. The receiver still turns itself off (I have taken to keeping the sub unplugged.)
Can anyone give me an idea of what to do next? I am losing my mind with this problem!
Corollary: I seem to have a lot of static electricity in and around my living room. Can this have anything to do with the problem I am having?
I apologize for the length of this question. I just wanted to be thorough.