This comes up rarely, but it just happened again, under similar conditions. I was in the middle of a game, with a pretty good score and closing in on an even better one. In the midst of play, suddenly the game starts warbling back and forth (I liken it to one of those European ambulance sounds, or at least the stock representation of them you hear in movies), with flashing lights, score displays go blank, and that's the end of that game. It probably resets spontaneously after several seconds of this most times, though I may have had to power cycle the game On & Off manually, in a couple cases. I cannot really I.D. any specific "trigger." In this latest example, I think it happened right after a shot went into the kickout saucer.

Have you run into this before -- on this or any comparable pins ? Do you know what the cause might be ?

This pin has Alltek MPU and lamp driver boards, rather than the originals, if that makes any difference. I would be more annoyed or concerned if this was other than a pretty rare occurrence.

Thanks for those leads. I'm not an aggressive player (like some), quite the opposite in fact. So, I would not really know what a slam tilt looks or sounds like, on early SS or later pins. I'm not technically inclined either, beyond the simplest things, so I'll add that to the list for the tech to look at.

In the meantime, is there a way I can temporarily disconnect the whole slam tilt thing on this pin ? It would have to be easy to do, nothing removed long term, no soldering or anything like that -- easily reversible ?

Then I'll just have to wait for the next service call. I don't do soldering.

It may be that the frequency of this occurring has started to increase -- not sure yet. If so, perhaps that's a clue ?

Thanks vid1900, I'll take a look underneath. In that pic, are we talking about the green blob @ left, or the amber "termite" @ bottom center ?

Update: just had that service call. There was no cap on the slam tilt switch, but it turns out that the switch was apparently stuck ON, *or* in contact / very near contact with the coin door. The net result was that it didn't take all that much to trigger a slam tilt condition. This was probably (hopefully) the sole cause. At least until some evidence to the contrary comes up. Testing every game switch & diode sounds like it would be a major chore, so I'm hoping this won't be necessary. Anyway, you guys seem to have nailed this, and I do appreciate it !