This is a high voltage capacitor used in the microwave's magnetron circuit. It stores and releases electrical energy to help power the magnetron, which generates the microwaves that heat food. Replace this capacitor if the microwave runs but does not heat, hums loudly without cooking, or if the capacitor has visibly bulged or leaked. Always discharge the capacitor before handling, as it can retain a dangerous charge even when unplugged.
Do-It-Yourself Stories from Customers like You
Frigidaire professional microwave not heating everything else was working ok eg (turntable and lights) unit had a loud humming sound when it stopped heating Fran P. • Laurel Springs , NJ • December 15, 2014
Replaced the magnetron and high voltage capacitor. I tried replacing only the diode (rectifier) first with no luck. I hope this is helpful.
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