OK, that stack is now behaving itself. However, the reset cam is continually turning now (not the score motor). I see lightning coming from the switch stack labeled 'clutch'.
Any ideas?
Bloody Bally's... what the hell is CLUTCH?? LOL
Sometimes the blue flashes/sparks are an indication of what nots engaging properly... make sure its not arcing and that the switches are actually cloosing. Often on the coil tabs ( metal thingys) they get dirty/ misaligned and the relay cannot pull in properly... ensure good operation on these.. sometimes its that the spring on top has been knocked off