Leeds
Quoted from rockwell:I found the issue!
After narrowing it down to the wiring (I had re-pinned the display connectors and installed new Wolffpac LED displays), I was finally able to isolate the issue.
Turns out everything was re-pinned and re-installed properly. But...on the original display IDC connector housings, there were wires that were routed across some of the unused pins. So, for example, a given wire would be daisy-chained (but unused) across two connectors, say, to get to the third connector where it was used. The wire was still inserted into the IDC on the skipped-over displays, but on an unused pin. This didn't cause any trouble on the original displays. On the Wolffpac displays however, this appears to be an issue. At least it is in my game.
Removing the daisy-chained connections at unused pins and just letting them float freely cleared the issue, and the displays worked normally (fixing both the weird player 2 display issue and the missing 7th digit).
So I've cleaned them up and left the connectors that were on unused pins removed from the housings. Everything seems good.
Well done for solving this problem. I can confirm that I had the exact same issue with player 2 display when using led displays on my pacman. I wish you’d created this thread a long time ago!!! Ha ha
So there’s no chance this was a ‘somebody hacked the wiring’ either. Pacman at least doesn’t like led displays !!
On your led displays was pin11 joined to pin12?? This is puzzling if so as the schematics say 11 should be NC so why do this at all??
