(Topic ID: 264339)

Diode Reads Bad in Circuit and Good Out

By PinballGurus

4 years ago



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#1 4 years ago

Dumb question... I’m having an issue with Checkpoint blowing the F2 fuse on startup. Apparently the issue is related to the pop bumpers... I tested a pop bumper diode in circuit and it read bad, but when I pulled it out of circuit it read good. I checked the coils and they were all good, but the one with the bad diode was only reading 3 ohms instead of 4 ohms. Any ideas what would cause this?

#5 4 years ago

You guys are awesome.

F2 on the power supply board, which is a newer board.
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