I’m not familiar with the game. What normally causes the ball to eject? I would start there. So, if hitting switch X causes the ball to eject once it is in the saucer, perhaps you are getting phantom switch hits on switch X, either because it is gapped too close or some other reason.

When exactly does it mis-eject (if you’ll allow me to make up a word)? As soon as the ball lands in the saucer, or some other time? If some other time, can you pinpoint when? Have you hit some of the standup targets but not all, for instance? Try to pay particular attention to when this is happening to see if there is a trend, or if it is completely random.

So, as soon as it falls into 28, it moves over to 29 despite the fact you haven’t made any of the stand ups again. Hmmm.

Have you tried putting a ball into 28 during switch test mode to see if any other switches are registering at the same time that shouldn’t be?

I would also check all the solenoid numbers during test as ForeFlow suggested.

Did you do the coil test like ForceFlow suggested?

So, one coil fires when another one should be firing? Is that right? Perhaps a crossed wire or a connector that is pinned wrong.

Again, not that familiar with the game, but could it be a malfunction with coil 10 that somehow switches power between the coils and flashers? Perhaps not, but I thought I would mention it as I had a problem with a solenoid expander relay on a different, older game that was causing the wrong coils to fire.

If not, then maybe you need to check the boards.

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