I have a Williams Rollergames and it keeps blowing fuse F5 on the auxiliary power/driver board (the fuse for the right flippers). When it blows, it is incredibly inconsistent (some times the flipper is being held, sometimes mid ball, sometimes at the beginning of a ball). First time it happened was after about 200 games. Then again after another 100 and then another 100. Now it's blowing them about every 10-30 games. Every time it blew, I would check over the flipper mechs and replace the 2a slow blow fuse (which is what the manual calls for). Every thing always seems to be fine
The game had its high current driver board blow and needed replaced. I also replaced the power supply and the auxiliary power/driver board. I recently rebuilt the flippers thinking it may be a coil or end of stroke issue but again, it popped after about 40 games.
Both right coils have diodes that test fine and resistance values look good (one is reading 3 ohms higher than it should on the secondary but I don't know if that would do it)
End of stroke switches and caps are brand new and functioning normally
I just don't know what else to check at this point. Any help is greatly appreciated