the score motor will continue to turn as its trying to reset all score reels to zero. You could manually move the stuck ones round to zero and see if it will then start a game. Then you need to figure out why those score reels are not moving - could be a wire off somewhere if whole sets of score reels are not resetting. On 4 player games there is usually a player selector unit / stepper unit that selects player 1, 2, 3, 4 - that effectively controls which set of score reels are active, so if that is not working it could be that it is only setting player 1 score reels to zero. so fud that unit and again you can probably manually advance it to player 2 3 or 4 and see what happens then