I have never seen this issue. The information for the credit display shows in the player 1 and credit display. The problem persists with the original MPU and an Altek. I've also changed the driver from original to altek; problem still there. I've even moved displays around. Nothing that I know of has changed in the wiring harness. I really don't know how to even approach this diagnosis. Any ideas or anyone ever seen this. I thought I had seen everything with a early Bally, evidently not.