I recent acquired a TOM. I only played it enough to diagnose problems. I finally got it 100% functional (AFAIK). So I played my first couple of games with the glass installed. On my second game (literally!) I hit the bug. Prior to owning the game, I wasn't even aware that this was a problem. I am looking forward to my new board. Thanks Ingo.

Bad news. After a year of playing, a trunk hit lead to the ball escaping the subway. Because the Ultimate Trunk Error board extends beyond the trunk assembly, it creates a shelf for the ball to land on. That shorted out my board.

In the photo I am holding the ball with a magnet. As you can see, on my machine, a ball can fit through the space between the playfield and the subway. In the other photo, you can see how the ball can land and sit on top of the extended circuit board (I put the ball there for the photo - when I original removed the ball, it was in a different position).

There was discussion early on, about putting the circuitry on the other side of the board - but that was problematic.

First question: can any/all of you fit a ball through the gap between the subway and the playfield (as I can)? If so, you run the risk of the same kind of issue.

Second question: suggestions on a fix? I have some bits of plastic, and some TAP acrylic cement (https://www.tapplastics.com/product/repair_products/plastic_adhesives/tap_acrylic_cement/130). I could weld a piece of plastic to close off the spacing. Alternately, I could screw a couple of posts into the wood, and put a band between them.

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The board was not damaged. F116 blew. After replacing the fuse, everything works fine. I am definitely going to address this. I am not convinced that this won't cause a more significant problem if it happens again.

Just something for everyone to be aware of.

I am going to put two screws, and a band to keep the ball in the subway. I'll take a picture when I have it installed.

It's kind of a hack, but that ball isn't coming back out of that subway any more.

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Thanks Ingo. I think I'm going to do both: fill the gap from the eddie board (which allows the ball to escape), and cover the back side of the circuit board.