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are these original displays or something like a pinscore aftermarket? i put those in my mr and mrs pacman and had a similar issue. i pulled out my wiring diagram and found that some of the latch wires were punched down in the "not connected" pin and it was messing up the pinscore. i pulled out all wires on the not connected pins and everything was great. Hope that helps
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Quoted from JReedie:After checking J1 and every connector in the machine I couldn't find any issues, however I unplugged my ball/credit display (which hasn't worked at all since I've had the machine) all 4 of the player displays now test perfectly!
Ah, similar effect i experienced. Glad its working.
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Rancho Cucamonga, CA