I'm new to this site, but it was recommended as a place I might the answer to what is causing the AMP ERROR message I get on my RCA STAV-4090 Receiver. It has worked great for years and then it started to periodically get the AMP ERROR message and shut down. But, it would always start again. Then one day I turned it on and the AMP ERROR message showed and it shut down. It has done it ever since and the silence is driving me nuts : ). Any recommendations or advise is "greatly appreciated"!!!