Sunday afternoon's project was a Lasko box fan: not working at all. It was easy enough to disassemble. The problem turned out to be a blown thermal fuse which was nestled deep in the motor near the motor windings.
The thermal fuse is rated 115° C, I had that value on hand and replaced it, the fan works again. It's a fairly straightforward repair but care needs to be taken working around the delicate motor winding wires.
We see thermal fuses nestled next to motor windings in all sorts of appliances: coffee grinders, food processors, blenders, etc. It's a common part to fail, it's often a mystery why it goes bad.
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