Tried to play my Bally Gold Rush today, and ran into a problem.
As soon as I start a new game, it scores one point. If I hit a 10 point target it scores 11 points, etc. I could also hear a slight buzzing from the backbox.
In watching the startup from the backbox, all of the score reels zero out, then the coil for a stepper labeled as the "scramble unit" locks on (that was the buzzing-- clearly not supposed to be on). In looking at the schematic, there's nothing called the "scramble unit" on the schematic.