fixing am radio?

A little late, but I'll throw my hat in the ring anyway.

A few tips: if it isn't working, check the power supply, if it is, check for broken solder joints, and use a pencil or non conductive prod and poke each piece to make sure there is no bad connection, and clean all the moving parts with pot cleaner.

Electronics are very linear, so it's not rocket science, you just need a methodical approach, and a schematic helps.

After you've fixed it up, another alternative is to stick the head unit in the glove box like I did, fits well, after you take the face off for security reasons, of course. :)

Enjoy!