Microwave Not Heating? Microwave Oven Troubleshooting
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Common solutions for: Microwave not heating
01 - Thermal Fuse
The thermal fuse cuts off power to the microwave if the microwave overheats. To determine if the thermal fuse has blown, use a multimeter to test it for continuity. If the fuse doesn’t have continuity, replace it. The thermal fuse cannot be reset—if the fuse is blown, it must be replaced. (Caution: The microwave oven can store thousands of volts of electricity in its high voltage capacitor, even after the microwave oven has been unplugged. Due to the potential for electric shock, it is extremely... dangerous to replace the electronic components in a microwave. Only a licensed technician should replace the thermal fuse.)
