I have a Nitro Ground Shaker that I’m fixing up. The display in the match/credit position lights with all 0’s all the time. It is also a little bit duller than all the other displays. The problem is not in the display itself. I already tried swapping multiple good working displays. Also there is a new Alltek mpu board in the machine. I checked continuity through each wire for credit display. All real good. Tried wiggling wire harness with no change.
Please help!!