I am having Player 3 and Match digit issues on my Williams System 7 Laser Cue.
I have linked 2 videos: The first shows the match digits changing based upon what is shown in the player 1 display.
The second shows player 3 showing odd numbers as the score in player 1 changes
Vid 1:

Vid 2:

I have replaced the PIA on the MPU with a tested good PIA and swapped it with the Sound/Comma PIA so I am pretty certain that it is not it.
I cannot see any other common components other than the PIA. I would think that perhaps it was the SRC on the BCD output but that doesn't explain the player 3 digits flashing in time with the player 1 digits and if it was the BCD I would think I would see the same issue on 2 & 4.
Any ideas what to look at next?
Thanks

*SOLVED* 1J5 Pin 9 which is BCD A2 the wire was loose in the IDC crimp. I have no idea why this would cause the weird flashing etc but I pushed it in and the problem went away. I'll recrimp it for a permanent fix.