[gpdreier]

While heating a cup of water in the microwave. An electrical "pop" was heard coming from the microwave then the lights on the control panel went off. The circuit breaker did not flip off. The microwave no longer works. What happened? Is it something I can repair?

[Gene]

Most likely the problem is a shorted high voltage capacitor which caused the fuse to blow out. You can do it yourself if you know how to use a simple multimeter. You have to turn off the power to the unit and discharge the capacitor before do anything else.

Gene.

[gpdreier]

I appreciate your reply. The information is most useful. It is sad that I don't know what a high voltage capacitor looks like, where it is located in the microwave, or how to discharge a capacitor. Any additional details and safety precautions are appreciated.

[Gene]

It is very dangerous to work with the microwave because of high voltage (about 4000 Volts) inside the control compartment . I would recommend to call a qualified tech to do it for you.

Gene.

[MicrowaveDisplaycom]

It may be a shorted high voltage capacitor or a shorted high voltage diode.

Here are some links you or someone you know can use (in order given) for test help, but read the safety warnings first:

How to Test The High Voltage Capacitor Used In Microwave Ovens
How to Test The High-Voltage Diode (Rectifier) Used In Microwave Ovens (if it is NOT shorted, it's probably fine)

You can usually find helpful exploded view diagrams and order parts by entering your full model number here.

There should be a "mini-manual" hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting & testing.

If you still have trouble, feel free to let me know.

[gpdreier]

I appreciate the warning. This info pleases my wife for obvious reasons. She is making a case to buy a new unit.

[gpdreier]

I appreciate the links. The info clearly notes the precautions.