Diagnosing weird game issues with Gottlieb System 80B (Raven)

Just when I thought I had my Raven running beautifully, it just started acting up. I would press the start button and the game would begin to start, but then not kick out a ball, the sound would stop, and none of the coils would fire. It was very odd. I knew from experience that Gottlieb games can get a bit wonky with irregular power or switch inputs, so here’s a short, 2-part video series of the “rabbit hole” I went down trying to figure out what was wrong? (As always, Ockham’s Razor tends to prevail)

Along the way, we learn a few things about the switch matrix on these System 80 games and how they differ from other manufacturers like Bally/Williams when it comes to trying to trace switch matrix issues. Here’s part one:

And here is part two, where we figure things out…

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