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Defy-microwave-not-heating, when your microwave turns on but does not heat up, it may mean the door switch is broken. the door switch signals other microwave components to supply power when closed, and to stop heating when open. the door switch can also be called an interlock switch.. If your microwave oven doesn’t heat, you may have a problem with the high voltage diode or rectifier. this component helps provide the high voltage that powers the magnetron. the high voltage diode is located near the magnetron and the high voltage capacitor, so access will require removal of the cabinet., 3. problem with the magnetron. if your microwave is not heating, then the problem could also be with the magnetron. magnetron is an important part of the microwave and is responsible for providing the heat which cooks the food..

Problem – you attempt use your microwave and instead of heating your food it just makes a buzzing noise. it is likely that it has a defective capacitor. a capacitor is a device that stores electricity. a microwave oven usually has a high-voltage capacitor that is central to the operation of the unit., remember safety first always unplug all appliances before doing any repairs..

Common solutions for: microwave not heating 01 - diode the diode converts the a/c power output of the transformer to d/c, doubling the voltage to nearly 5,000 volts. this high voltage powers the magnetron to heat the food., if any of the door switches fails, the microwave will not start or heat. to determine if any of the door switches are defective, use a multimeter to test each of the switches for continuity. if any of the door switches does not have continuity, replace it.. My first thought would be a blown magnetron. on microwaves, these can generally go dead, usually with a popping sound. i think there might also be a fuse in your microwave, but i do believe that if it was a blown fuse, your mw would not start up. the technician should also not forget the door switch since some of them can cause the same issue., common microwave problems and faults and how to fix them the microwave oven has to be one of the most popular household appliances ever devised. with its operating simplicity and speed of performance, it is an essential part of the modern kitchen. owing to our dependence on such devices, it becomes necessary to learn the basic skills required to tackle common microwave problems.


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