I have an Indiana Jones that recently started having a reset issue when both flippers are pressed. I first started with all of the typical reset fixes, even going to the extent of swapping out the MPU board from another working game. I've come to believe the issue resides within the flipper circuits.
When I check the end of stroke switches for continuity with the game off, I get an open circuit for each side. This seems correct. And when you close the switch I get continuity, which also seems correct. However when I do this with the game on, and in the attract mode, I get the same thing for the left side, but I get a closed circuit on the right side (without closing the switch). I would expect both side to behave the same, but I'm not sure which side is normal and which side is acting up. It appears each leg of EOS switch on the right side is grounded with the game on, while only one side of the EOS switch is grounded on the left side.
Any thoughts which is correct? And if this could be contributing to my reset issue?
(During game play the flippers operate fine until the reset of course)