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I have three machines with these in them. I suppose they are power supplys. They are generally the same looking, but one has counters mounted into it and the other two dont. My trouble is that I took one that I felt like worked, and put into a machine that I want getting any action out of, and something smelled like it was getting hot, before i could unplug it, I blew a chip off one of the circuit boards in it! I would have figured a fuse would go before that...

Anyhow, I'm sure you guys in the forum have seen and know how yo check these. In going to get a bunch of toggle switches to replace the reset key switch. From there I'm not sure what results to expect.