@discoman here is the SM [document|32837] for your receiver. Use that to disassemble it. Then take a preliminary look at the boards. Check for "odd" looking components. If you have never looked at a circuit board, it may all look confusing. To help that, take some good pictures of your boards and post those with your Question. That way we can see what you see.
Common issues with only one side of your receiver working would be a failed amp IC or amp circuit. Once we can see what you see, we can point to a few things and have you taste some basic stuff. Yes, you will need a multimeter etc. Something inexpensive is perfectly okay since we are not going to do some wild stuff on here :-)
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