While looking at the Yellow Bonus Reset Solenoid circuit (see below) trying to figure out what is making this come on before it should, I was able to account for the the two Score Motor switches. They were N.O.open and the Score Motor runs for most every thing you do so I knew it had to be able to run without the Yellow Bonus Reset Solenoid energizing.
This left the Reset Relays and Yellow/Green Bonus Relays. The only thing resetting was the bonus not the whole machine so that was out.
My focus went to the Yellow/Green Bonus Relays (see below). The Yellow Bonus Zero Relay contact had to be energized that was a given because as the bonus accumulated on the Yellow Bonus Unit the Yellow Bonus Unit Zero contact would close completing the circuit for the The Yellow Bonus Zero Relay.
1 Yellow Bonus Relay, to me this was a no only because I went over those contacts and I never saw the relay hang up. so fore the moment I would move on.
2 Yellow Hole relay. If this was closed for some reason the yellow hole eject would be going off.
3 Left or Right Out Roll Over switch. They are so flush to the underside of the play field its difficult to see which state there in. I checked the right side first and checked for continuity. Sure enough there was a clear ring from my MM.
Thank you all for your help. This problem presented itself in a way that I couldn't get my head around. Your ideas and questions pulled me back into frame so I could finally see through the forest.The Final Problem 1 (resized).jpglast problem right out roll over (resized).jpg