I can't replace the cables on the tape player as they are hardwired into it. Was working until a couple days ago never unplugged the hook up cables never came loose.
Well I need to know if that input works with another source.
I have downloaded a service manual for your unit with all the schematics. Unfortunately your unit is not simple. The moderns have done their dastardly work.
The tape switch does not actually do the switching. It discharges a capacitor which activates a gated MOSFET switching IC (Q302). One switch therefore switches both channels. So if it is switching the left channel, then the switch is OK.
So more than likely if it turns out to be the amp, Q302 will likely have to be replaced. If you can get it.
Q302 has thirty pins and so replacing it will be a bear. Without having the unit on my bench, I would not be able to confirm that as the problem, but I suspect that would be most likely.
You must check further and see if the left and right tape two inputs work or not. You are dabbling in old cheap and nasty tape players which are much more likely to go wrong than your integrated amplifier.
I'm going to keep a copy of your service manual on my hard drive in case you need further help.
