Would appreciate help thanks
as I've gone as far as I can at this point.
OK, so here are the clues:
Clue 1. The #7 drop target does not work (no sounds and no score for regardless of what lights are lit). I have checked that switch works.
Clue 2. The corresponding spot target to drop #7 does not work at all (no sound so score). I have checked that switch works.
So looking at schematic, these two are related and you can see directly next to each other (I verified wire colors).
Clue 3: targets 1-6 and corresponding related spots 1-6 all work in all circumstances. For me this rules out it being an issue with relays B or C (50 or 500pt relays).
Clue 4: occasionally, when red light is on #7 drop target spot and I drop target 6, it will erroneously score 5000 as though the red light was on 6. This leads me to believe that it has something to do with the multiplayer control unit.
However, looking at the schematic, I really can't see why the #7 spot target wouldn't work because it doesn't seem to need the multiplayer control unit to work.
Anyway confused newb trying to get past this