Magnetron failuremmm, door switch issues, or a blown diode could be the culprit. Never try to fix a microwave yourself due to high voltage risks.
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MicrowaveNotHeating?CommonCausesandFixes
By Rohit SharmaSep 2, 20261 min readHome Appliance
Microwave Not Heating? Common Causes and Fixes
Is your microwave turning on but food stays cold? Here's what might be wrong.