Bty, when the deck was attached, it powered up and functions. But the red light was off then. Now the red light flashes if that helps.
Did the replacement IC fix the audio issue? I have a PC-X1000. I got it the same way you got yours… with both speakers connected to one side’s terminals. When I separated them, I get no sound out of one side. I don’t know what an IC is, but if it fixed your problem, I imagine that’s what I’ll need too.