Working on restoring a Truck Stop for a client. Shopped it, replaced the cabinet decals, replaced all the fuses, replaced the flipper coils, installed rebuild kit, the works. All the normal stuff. Anyway, after finishing up, I played two complete games with no issues. Turned the machine off to angle and level it. Turned it back on and played one last game. Unfortunately, all of a sudden it wouldn't stop ejecting balls into the shooter lane and none of the coils were working. After roughly 30 seconds or so of the balls trying to be kicked into the shooter lane, it stops and I get a "Check FU-1 0A Field Fuse." If I unplug the connector at the opto board while the balls are constantly trying to kick into the shooter lane, it stops and all the coils energize and the game then plays like normal. Any ideas? I already reflowed both of the opto boards. The just started all of a sudden. I'm at a loss. Trying to get this fixed up. Any help would be appreciated. Many thanks - Mike.