Mate... we need pics if possible of broken unit in head and the coin switch on the door.
The game is trying to get to start position.. so it is trying to reset. It cannot do this if a switch is either open when meant to be closed or vice versa.... the score motor will continue to run and run searching for the next logic step ( switch closure etc). You can try and override it by pushing the reset relay but it will do nothing as the game is still searching for the open/ closed switch.
post some pics of the areas suggested and we can go from there
