Hello all well I finally found what I think is a good deal I bought a bally supersonic off cl for $150. So I got it home and it worked fine except a couple bulbs being out and needing new rubbers and a nice cleaning. But now its mpu led is staying on and no game play. So where do I go from here I'm new to working on pins and don't want to burn a bunch of money on this pin. Thanks in advance for any help you may have.