Quoted from MrSanRamon:
I picked up a SIlverball Mania yesterday and of course it has a couple of issues that I could use some help with.
The game boots and plays sometimes.
If it kicks out a ball & plays, when the first ball drains the game resets.
If it won't kick out a ball, everytime I push the start game button 1100 points is added to the score.
The trough switch looks good and like it hasn't been changed or resoldered since new and the diode appears to be in properly.
Any help would be much appreciated.
Do the self tests work correctly? If switches are completely mapped wrong I would suspect ROMs are for a different game.