Hey everyone, got a question for anyone who might be able to answer. I've got a Sony DAV-DZ120 stereo receiver I got used, that I'm having an odd problem with. I should note that it worked for approximately 3 weeks after I got it, and that it came with no instruction manual. I have already contacted Sony about this issue, and was told in no uncertain terms that they would be willing to fix it, if I paid out the nose for it. I bought this thing for about $75, and they want, minimum, $200. I told them to take a long walk off a short pier, and hung up on them. This unit I got because it's got 5.1 surround sound, with some really good sound... when it worked, anyway. After setting it up and testing it out, I (as I said) got it to work for about 3 weeks or so. I went to turn it on one day and it turned on as usual (and continues this behavior) and goes through it's "demo cycle," showing all the different configurations and such. However, when I turn it on it immediately starts "reading" the imaginary disc, then starts in on a cyclical error message. "Protector *change* Push Power" and keeps this error going until I power it off. I have opened the casing and taken various voltage readings, and nothing seems shorted or open, so far as I can tell. I have tried plugging in different speakers, including speakers that don't go to it (from another entertainment system that I know is good), removing all speakers connected to it, and tried powering it on and off from the unit itself and from the remote. Nothing. I'm thinking a chip may have fried out, which would be disappointing but not entirely surprising given that it's Sony... however I don't have the skills or knowledge to test this. I'm willing to write it off as a loss, as much as I don't want to, but hopefully someone here can give me at lesat something to look for. Thanks for the help, in advance; and please ask if you need further clarification on anything.