My 20 year old Sony Pre-Pro popped about 3 times the other day, as heard from speakers, and then went silent. An hour later it begin to play again. Two days later, more popping, but this time no resurrection. I called the only repair shop in Louisville, KY where I live to take a look at it but they declined. I do want to repair this unit since it has inputs\/outputs for optical S\/PDIF, which I need to operate my pair of DAT Recorders. There are no currently produced Pre-Pros that have those sorts of connections. At any rate, to get me back to where I was before the Pre-Pro went out I bought a Parasound P6 stereo preamplifer. It will also get me bass management, from all stereo components I will be connecting to it. So, I'm OK for now but still want to repair the TA-E9000ES thus my question is this: are there any of you here knowledgeable of an electronics repair shop in USA which might look at my TA-E90000ES?