I have an original MM with one strange issue. On boot up, as it's running the test, the bar runs across the screen. Rev 1.09C
As soon as the test is done and you get that one beep sound. At the same time as that final boot beep it lightly fires the trough coil, not enough to kick a ball out, then immediately does a regular fire and kicks a ball out. It does this with or without balls in the game. I tested all the trough optos are they are all fine. In fact the game plays 100% perfectly, just this strange ball trough kicker behavior on boot.

Anyone seen this before? Any thoughts on what to look at as the cause? Much appreciated!

But why is the game firing the coil at all? It shouldn’t be firing it at that moment.

Yep, they test fine. Checked them multiple times to be sure

Been this way since I got it. It’s making me wonder if it’s a software bug, but 1.09C is the latest and I assume every machine doesnt do this…..

Ah, good idea. I have not tested that one yet. I will do that tomorrow and report back. Thx!

Also, excellent ideas. The balls are new so I don’t think magnetized but I will check. Divots maybe, I will check for that too. It’s a HUO game so I suspect that will be ok, but worth a check. The plunger being too high could be a possibility, I will check that tomorrow too. Thx!

Mikey likey working games indeed

The mystery continues. Shooter lane switch works fine. even made sure a ball is activating the switch when its in the lane and it does. Balls are not magnetized. Ball trough is a-ok. optos all work and always indicate correctly when the balls are in and out of the trough. Really strange.

I did a short video:

Bumpareeno