Marty, thanks heaps for the offer - i'll see whether i require the part....

Retropin,

Yes that is correct - all scores work correctly except player 1

When i swap another player's score display and connect to player 1 plug, i have the same issue ie: just the end 0 displayed (not 000000).  So i assume the problem is not the actual display and has to be at the main display board end (or driver board).

I pulled the main display board off and checked all connections, and everything seemed OK to my novice eye....

I also carried out the Switch Test (03) and it says any stuck switches will be displayed - nothing was displayed and everything seemed fine - the only issue i have is the 3 bank drop target won't pop back up after all 3 have been dropped (fine for a new game though) - i pulled this apart and the horse shoe wiper thingy is broken on one - but i don't think this would affect the player 1 not scoring issue.