Yeah, the switches go bad all the time. They get a beating. The last microwave had a bad, small control transformer. A winding was open. Impossible to find this part. I got my Dremmel out and separated the laminations and rewound the burned coil. Worked OK but hummed a lot because I disturbed the laminations and couldn't weld them back properly. The ones that get thrown out are usually so filthy I don't want to touch them but can probably be repaired with just a switch replacement.
Yeah, the switches go bad all the time. They get a beating. The last microwave had a bad, small control transformer. A winding was open. Impossible to find this part. I got my Dremmel out and separated the laminations and rewound the burned coil. Worked OK but hummed a lot because I disturbed the laminations and couldn't weld them back properly. The ones that get thrown out are usually so filthy I don't want to touch them but can probably be repaired with just a switch replacement.
Fixed one years back, blown 50c fuse
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