Microwave Not Heating? Microwave Oven Troubleshooting
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Common solutions for: Microwave not heating
01 - High Voltage Transformer
Microwave ovens produce a very high voltage in order to power the magnetron antenna, which emits the energy that cooks the food. When a high voltage transformer fails, it will usually arc and have a burning smell. (Warning: The microwave oven can store a lethal amount of electricity in its high voltage capacitor, even after the microwave oven has been unplugged. Due to the high running voltage and the potential for electric shock, it is extremely dangerous to replace the electronic components in... a microwave. Only a licensed technician should replace the high voltage transformer.)