

On a high level, you can get a cleaner like Deoxit D5 in a spray bottle. Most pots have a slit in them so you can spray into them, then turn the pot through its range a bunch of times. It’s worth a try as a start. Obviously do it while the unit is unplugged.
If you want to consider a more aggressive rebuild, like a capacitor replacement, maybe find a cheap old amplifier at the thrift shop to use as practice for desoldering/resoldering.
You might be able to connect the BT to one input on the amp, like the tape input, and the CD to another.










I run the Windows build on Lutris just fine. You might have to cut the network for a few seconds during the launch (after you press “start game” in the launcher, before it loads the title screen)