OK, you knew the threat of MAMEing a classic would get a response, didn't you?
The usual advice is this:
1. Check all connections and make sure they are snug, and connected properly.
2. REPLACE those fuse holders. Don't just re-solder them. When something is damaged, it's best to replace with new. (Radio shack sells a few different kinds of fuse holders).
3. Test the fuses to make sure they are still good. Sometimes a visual inspection isn't enough.
4. Measure voltages. Get a cheap digital multimeter ($15) and measure all voltage outputs to make sure they are correct.
You can then go from there....