Quoted from fabsj82:I finally joined the club!! After months of searching I ended up spotting this one in the background of a CL ad and asked the guy if he would sell. It's got some things that will need attention but it's in overall good shape. The one issue I'm having at the moment is the right pop bumper is dead. It won't fire via switch or in test mode. It lights up. All the wires are connected and test the same on the MM as the two working pops. Any tips on what I'm missing. Still working on my schematic skills.
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Given that it doesn't fire in coil test, I wouldn't look at the activation switch (yet). Once you've got it working in coil test, we can look at the activation switch if needed.
It sounds similar to an issue I had with my Space Station when I picked it up. Here's my debugging thread working through the left pop: https://pinside.com/pinball/forum/topic/space-station-special-solenoid-5-not-firing
First thing I would do is to make sure there's power (voltage) at the coil. If there is not voltage at both lugs relative to ground, the coil is done. If there's no voltage, the problem is upstream (fuse, broken power wire, etc).
If there is voltage at both lugs, you can test the coil by briefly grounding the lug with the thin wire to ground. That should fire the coil. Likewise, the tab of the controlling transistor should also fire the coil. If the tab doesn't fire the coil, but grounding the coil does there's a break in the ground wire between the transistor and the coil.
If all that checks out, you can start looking at the board closer.
Green Bay, WI
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Canberra
