Microwave Repair: Common Issues and How to Fix Them

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Microwave Repair: Common Issues and How to Fix Them


Microwaves have become an essential appliance in most households, making cooking and reheating food quick and convenient. However, like any other appliance, microwaves can develop problems over time. Here are some common microwave issues and how to fix them.

1. Microwave not heating

If your microwave is not heating up food, the problem could be with the magnetron, the component responsible for generating the microwaves that heat the food. If the magnetron is defective, it will need to be replaced.

2. Microwave plate not turning

If your microwave’s turntable is not turning, it could be due to a faulty turntable motor. To fix this, you will need to replace the motor. However, if the motor is working properly, the problem could be with the turntable coupler, which connects the motor to the turntable. The coupler can become worn or damaged over time and may need to be replaced.

3. Microwave making strange noises

If your microwave is making strange noises, such as buzzing or humming sounds, it could be due to a faulty high voltage diode. The diode converts the power from the transformer to a high voltage that is necessary for the magnetron to operate. If the diode is faulty, it will need to be replaced.

4. Microwave not turning on

If your microwave is not turning on at all, the first thing to check is the power supply. Make sure the microwave is plugged in and the outlet is working. If there is no power supply issue, the problem could be with the fuse or thermal cutoff. These components can become damaged due to power surges or overheating and will need to be replaced.

5. Microwave sparking or arcing

If you notice sparks or arcing inside your microwave while it is in operation, it could be due to a damaged waveguide cover. The waveguide cover protects the magnetron from food splatters and other debris. If the cover is damaged or has become coated with grease or food particles, it can cause arcing. The waveguide cover will need to be replaced.


Regular maintenance and proper use can help prevent these common microwave issues from occurring. However, if you do experience any of these problems, it is best to have a professional microwave repair service handle the repairs. Attempting to repair a microwave on your own can be dangerous and may cause further damage to the appliance. With proper maintenance and timely repairs, your microwave can continue to provide reliable service for years to come.

If you need help with your appliance, then you can look into the service section – Repair service In Tucson.