Picked up a Mars Trek a few months ago, and finally have space to set it up. First issue is that anything worth 1,000 points will not score, no chime, no score advance. When I manually activate the 1,000 point relay in the back box, the reel will advance, chime will sound. Also when the 100 point reel rolls over from 9 to 0 it will activate the 1,000 point relay as intended. Top hole (worth 5,000 points) will activate score motor and kick out the ball, but no scoring. Nothing on the playfield worth 1,000 scores.

Second issue is that the ball count unit doesn't always advance. Pretty sure I just need to clean and rebuild that stepper unit. Other issue that I believe is related is that I set it to 3 Ball play, but it always plays a 5 ball game. The ball count unit disc seems to have a lot of some type of lube on it, and the traces seem pretty worn from the wipers, is it salvageable? Picture attached. Thanks for any help!
-Sauce

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Quick update. So decided to trace the 1,000 point circuit from the back box relay on down, and notice that one of the wires was broke off! (Picture attached) Missed that before somehow. Resoldered and 1,000 points are working again.

Did a little more futzing with the ball count unit. The step up relay fires every time it should, but the latch wasn’t always catching. Mechs seem to have been over lubed and a little gummed up now. I adjusted one of the springs to put a lil more tension on the piece that drops and catches the gear and seems to be advancing 95% of the time now. Was really dreading having to do a full tear down on that stepper unit but probably will in the future.

The only remaining mystery is why it’s playing 5 balls when set to 3. Did some continuity tests on the ball count unit, and everything looked to be fine, but the traces are a lil wacky (as seen in first photo). At least it’s very playable now, and five ball ain’t so bad with how quick this game can be.

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