and the drama continues
Ok, so new MPU, new solenoid driver board...
Plugged in the machine and everything looked good. I don't recall hearing anything odd other than the power supply making a louder than normal hum. The boards looked good, I didn't see anything odd, so I started looking at bulbs that weren't lighting up. Power supply went quiet, then back to a hum, and pop... magic smoke got let out.
Not knowing what happened I unplugged the machine, pulled the glass, and noted that the coil that pushes the ball into the launch tray burned out. I also blew fuse 4 and 5 on the power supply which are a 5 and 20A respectively.
Replaced the fuses, unsoldered the wires from that coil, plugged the machine back in and everything seems to work fine.
Called the solenoid driver board supplier and he asked me to send it back for replacement. Now I guess I just need to find a new coil for that piece.
Quick question though... ah.. I should post a picture. Stand by