Hey guys
Picked up a JPLW a few years back. Boards had acid damage. Sent them off to "lock when lit" got them back and game now works and plays though a game but has no display. I put a brand new xpin display power supply board in. Still nothing. I then swapped out the dmd with one that I took from a Williams game (from what I understand they were all the same). The good dmd still didnt work. Any hint as to what to check or where to go next would be great.

Ive worked on games for 20 years. Done playfield swaps. fixed all sorts of ghosts. Why wouldn't it be a backwards ribbon cable to tangle me up. First one I checked was backwards.

Thanks pin guy.