Our microwave began making a loud humming noise when it ended cooking and while the door was closed. The noise continued once I closed the door after retrieving the item inside of it.
Is this a good question?
Rep: 685.3k
3.4k
1.1k
2.6k
The magnetron uses high voltage, high current DC power to generate the microwave frequency that cooks the food. Under normal circumstances, the magnetron emits a low hum. However, if the magnetron is damaged or nearly burned out, it may begin emitting high-pitched sounds or growling noises. If the magnetron is noisy, this indicates that the magnetron is nearing the end of its life or might be defective. A defective high-voltage diode can also cause the magnetron to be loud. Before replacing the magnetron, first test the high voltage diode. If the diode is not defective, replace the magnetron. (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 magnetron.)
Was this answer helpful?
Past 24 Hours: 0
Past 7 Days: 6
Past 30 Days: 26
All Time: 7,196
1 Comment
What model of Kenmore Microwave do you have? Is the microwave still heating the food properly? If it isn't heating as it should.. check out this link: http://www.partselect.com/Microwave+test...
by Kelsea Weber