All microwaves are equipped with a magnetron. A properly functioning magnetron emits a low hum during operation. When the magnetron is failing that hum can turn into a high pitched hum or a growling sound. If the magnetron in your microwave is faulty, it will need to be replaced.

Why is my microwave making a buzzing noise?

A microwave making noise is also an indication that there is a problem with the microwave magnetron. If the magnetron is defective, it may cause a loud buzzing noise, which indicates that the magnetron is nearing the end of its life or might be defective.

Why is my microwave buzzing when not in use?

According to GE Appliances, the humming sound occurs due to the magnetron tube turning on and off to achieve the lower power setting. The vacuum tube produces the energy that the microwave needs to run. The humming noise produced from the magnetron is normal.

How long does a GE microwave last?

The average microwave oven lasts about seven years with normal use, and even less with heavy use and poor maintenance. A large family may find themselves replacing their appliance every four to five years as they become more reliant on its use to heat up snacks and leftovers, or to defrost meals.

Why is my microwave so loud?

If your microwave is loud, noisy or making unusual clicking sounds, it could be a result of a defective magnetron tube. The magnetron tube uses high voltage, high current DC power that generates the microwave frequency, which cooks the food, and is meant to be nearly silent.

Why does my microwave make a popping sound?

Microwave Makes a Popping Noise. If a popping noise is heard in the microwave oven, check the following: Popping sounds are usually attributed to the food being cooked. Food with high fat content will pop and sizzle as it heats up. Covering the container will reduce this noise.

Why is microwave humming?

If you hear a humming noise when the microwave receives no power, the transformer may be emitting the sound. The transformer provides power to the clock, and the humming noise will sound subtle. You can hear this sound only if you listen to the appliance closely. If the humming sound is loud, the exterior fan may be functioning.