Working another issue on the Solar City...

Game intermittently plays "past" the last ball, regardless of 1p or 2p game. Sometimes the game ends properly with "game over" lighting and no further action once the final ball drains. Other times, the machine cycles again after the final ball (set to 5 currently) drains, kicks the ball to the outlane, and vomits a random amount of points to the player 1 reels. It's possible to continue playing from this point although the ball count lights are not lit. It's like it skipped the "game over" state and continued without resetting back to Ball 1 (although the playfield does reset). The random additions to the score reels are really strange though (typically 10-20k but not just the 10k reel, they all move).

I have the schematic and believe I've checked the relevant switches on the BX line. I should also mention that the game correctly activates 2x bonus so it "knows" when it's on ball 5.

I feel like I need to be looking at the player unit but am looking for guidance while I keep checking things, thanks!

Another clue... in this state, (after the final ball), if I manually tap rollovers or standups - multiple score reels move simultaneously. Once that ball drains and the game goes even FURTHER past ball 5 (it would now be on ball 7 technically) the scoring works properly (playfield switches score the proper score reels, not multiple reels at the same time).

Hm, I don't think anything is terribly out of whack since it plays properly around 50% of the time. It sure seems like there is probably a borderline-adjusted switch somewhere that I need to file and/or tweak a bit.

No, the game over light does not come on when it's behaving incorrectly.

So now it's playing correctly nearly all the time, these intermittent issues are hard to diagnose when they don't happen constantly! We'll see if it comes back more consistently so I can track it down better.