Having problems with my NASCAR. First ball starts and plays fine.

However the ball drains but it does not end. The game stays active and it never goes into ball search.

I have tested all switches and optos in the trough both with balls and manually. All tests are fine.

The out hole subway up kicker and the shooter lane kicker are both working properly.

My tech and I are stumped. Anyone have an idea?

The optos test properly. There are 2 optos on the shooter kicker, one for the ball at rest and one one for entering the shooter lane. Both test fine with balls and manually as you describe.

There are three micoswitches in the trough. They all test properly both open and closed, with balls and manually.

When the balls are in the trough, the switch matrix test shows four switches activated, and they clear when I remove the balls.

All these switches are on column 2 of the matrix. I'm going to test the transistor these are attached to. Does that make sense?

I think I have this resolved, but not really sure why.

First, I swapped out the opto with my LOTR - no change in behavior.

Then I swapped it out with my AC/DC - the machine started spitting out all the balls in the trough. I switched it off pretty quick.

Installed the original opto and no EOB. I noticed that the ball save light stayed on forever, so I started playing with feature adjustments.

I figured out when I set Max Ball Savers to 0, the machine works as expected. Not sure why this setting impacts the behavior, but it appears corrected. Ball save still works, so not sure what this setting even does, maybe saves during multiball?

Thanks for the suggestions, but if anyone knows why this worked, please let me know.