I've been shopping a Gottlieb Super Soccer. At this point I feel like I have it at 90-95%. My only remaining issue is when playing multi-players. The machine will skip balls for players at random. For example, if playing 2 players, Player 1 will work fine (and always does) but sometimes plays player 2 normally, other times just skips to the second ball for Player 1. The next time it'll give Player 2 a ball as normal. Same thing happens with 3 or 4 players. Sometimes the other players get a ball, sometimes they are skipped. I'm trying to figure out what causes the machine to decided to move to the next player at the beginning of the ball versus moving back to player 1.
I really thought it was the "add player unit" part of the schematic between the "P" and "ZB" relays. I've checked and double checked all of these, and even looked over the player unit and don't see anything amiss. Again, it doesn't happen every time, but seems to happen at random. So that leads me to believe that one of the connections is dirty or not quite adjusted right and only makes contact sometimes. Am I on the right track? Any idea which connection might be the culprit? Thanks, as always for any assistance you can give.