Intermittent problems are very hard to diagnose. I would say check your connectors on the right side of the CPU. Make sure they are clean and have good tension and the pads on the CPU are clean and shiny. You could have a bad display wrecking the party also. Unplug them one at a time -WITH the game OFF- and see if the problem is with any one of those. If it still gives you problems and it is an original CPU buy a Ni-Wumph and use that OE CPU for skeet. Yes, you can replace Ic's and fool all around with it till hell freezes, but this is a Joker Poker, a well sought after game. Aftermarket system 1 circuit boards improve reliability and I believe improve the resale value.