(Topic ID: 340943)

Duotron Score Motor picture request.

By MoJake

7 months ago

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#1 7 months ago

Heyo folks.

So I screwed up and didn't document before tinkering. I'm working on a DuoTron that was having trouble scoring 500 points. The machine was scoring 100 points individually, the bonus stepper was working correctly, and I'm unsure if 2nd player was working correctly but wanna say it was.

While chasing this bug/cleaning the machine, I un-did the switch stack on 3B and 3C to clean, but in the process disconnected two switch backs that were soldered together, as well as under a short coming off the blue-red-white relay G wire. I've tried to assemble it back but am now scoring 400 points off 500 point rollovers, the bonus stepper isn't firing one of the solenoids, and the 2nd player starts and is immediately skipped. I am able to short said blue-red-white from the score motor to the yellow-blue wire on the G-relay to get a full 500 score, which tells me this whole switch stack is not getting energized.

The specific thing I'm asking for is just some good pictures of a working duotron score motor switch stack that I can reference and repair my own, specifically on 3B/3C. (though bonus points on getting all of them for future searches) Otherwise any advice would be great about how to restore a score motor back to intended working order based off of schematics and manuals. (both I have repro's of from Marco)


IMG_1050 (resized).jpegIMG_1050 (resized).jpeg
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