Quoted from silver_spinner:TECH- Williams HOT TIP (EM version). i have done a lot to this to get it where its finally at. its so close now.
*press start (one player game), ball one scores on player 1 as its supposed to, but...ball 2 scores on player 2,then, ball 3 scores on player 3. then game over. (set to 3 balls).
if i select multi player games, it does similar, ball 1 is fine for all players. but when it goes to ball 2 & 3 is when it jumps all over and scores on the wrong players.
example- if i press 4 players, it will score all players ball ones correctly, but then when 4th player is done with ball1, it stays on 4th player and brings up ball 2, when that drains it still stays on 4th player for ball 3, then game over. so all other players play one ball, player 4 gets ball1,2,3 ..game over.
i've cleaned the player unit and all other stepper units. cleaned all contacts on relays in bottom of cabinet and under play field.
My Williams me is s single player. Can't help but good luck. I've had a bally a gottlieb and a Williams em. The Williams was the toughest to work on by far but it can be done.