Hoping someone here can help. I’m getting an error about the gobstopper door being stuck open (image 1). Upon turning on the game, the gobstopper disc performs a number of revolutions as if it cannot find a final position. No balls kick-out into the shooter lane at game start. All the optos associated with the gobstopper (the one under the disc and those in the subway leading to the trough) all seem to be activated (image 2) and at times continually activate when there are no balls in the trough, making the trough fire a number of times when powering on the machine. All the optos plug into the red opto board (image 3) which shows a red light on it (all other boards show a green light). Any advice on what I need to do? Thanks!
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