Hi James,
Your model is same as Jimmy's and mine. I can be also available for any additional help.
Nice to know it is not in bad shape.
Be careful removing the cassette door cover. It is a little tricky. I'm sure it will be nothing diffficult for you.
There is an inside lock that you have to disengage, then remove two tiny screws on either side before you can slide upward to take it out. As you know it is so easy to break that small plastic lock.
Back cover screw sizes are different, so also that of the main PC board. Back cover screws one cannot go wrong, but those of the main PC board, there are chances.
Make sure you use the right tip with no play for removing those tiny screws. You will love the dissassembly.
It's so much fun. Careful with the cassette deck removal becasue there are almost identical left and right tape channel plugs. The speaker connections, LED and mic connections are written on the PC main board.