Got a Harlem Globetrotters that tdiddy is bringing me a transformer for, and I'm trying to get a working cpu board together for it. I've got a board that plays great (in our Star Trek), but the displays are strangely messed up. They display only 8s or 9s. I'd say it was a bad U20 chip, but I've replaced that and everything is still broken. I guess I don't fully understand where something could be going wrong. It seems like the only chip that really effects display is that u20, with u14 and u19 playing a small role. Can someone step-by-step me through the display process so I understand it better?