I went with the repro Power Supply board from Rottendog on my Count-Down. For $75 it was well worth saving the time messing with that pain in the butt original Rockwell. Mine was arching, had bad solder fixes from previous owners, the pots were destroyed and was just more work than it was worth. The Rottendog worked great. There was already a ni-wumpf in the game when I got it that I did a ground mod on and the driver board got a ground mod too. Bought the big interconnector for like $30 and the game was 100% from the backbox. Played like a tank. Guy I sold it to was his first pin, didn't know a thing about pinball. I told him to call if he ever had an issue with it -- sold it to him in December, not a call since. Sys1s need a little love at the get go usually, but after bulletproofing a bit with new boards and a few required fixes, they can play on for a long time.