More Microwave Madness

Work begets work.

For example; if you send an email, you’ll likely get a reply which needs actioning. Or, if you finish your work early then you’ll be given more work.

The true is same if you fix a microwave. Once word gets out about the successful repair then more broken microwaves will appear.

This Panasonic model was dead on arrival. The mains plug fuse was checked and tested good (<1 ohm resistance). Therefore it’s time to open the case.

Past experience of microwaves have shown that the majority of issues are due to blown internal fuses. These are the fast-blow fuse, more sensitive than the type in the wall plug.

The customer/client/microwave-owner had reported that their main breaker had gone a few days prior, which gave further credence to a blown fuse.

Upon testing, it was clear that the internal fuse had gone pop. Interestingly, the fuse was difficult to remove from the holder because of the “spot welds” on the terminal – must have been a hell of a surge!

Thankfully, a simple fuse change worked wonders and fixed the issue. Better still, we were able to offer the previous microwave as a courtesy microwave in the meantime.

The incoming power control board. Note small fuse.
Resistance check reading >2Mohm. ie., open circuit.