주요 콘텐츠로 건너뛰기

Repair guides and troubleshooting information for microwave ovens.

756 질문 전체 보기

Why is my microwave making a hissing sound when plugged in?

My microwave fuse blew when I opened the door to interrupt the cycle. After some googling, I decided to replace the switches and the fuse. I got all the correct replacement parts. After I put everything back and plugged it in, it started to make a strange hissing sound. Any ideas why?

이 질문에 답하기 저도 같은 문제를 겪고 있습니다

좋은 질문 입니까?

점수 1
댓글 3개

The connection is loose or improper check them once again

Checked so many times and it’s still making the noise. The sound is high pitched and almost inaudible.

I’ve had a quick look into this, and it seems that the part that is causing the loud noise is called the magnetron tube. This part is what is responsible for cooking/heating whatever is in the microwave, using electromagnetic waves. If the magnetron tube is burning out or failing, it will often create a loud high pitch sound, as the frequencies being produced are higher than what they should be. If you want it fixed, you’ll have to get a professional out to replace it.

댓글 달기

답변 1개

가장 유용한 답변

A loud pitch hissing sound is common in capacitors in any device. When a capacitor fails the liquid dialectric will hiss out and the capacitor will swell. A microwave can not run on 120 volts at 20 amps very well so the capacitor charges like a temp battery then discharges into the magnatron to cook the food. Microwaves have capacitors as high as 10000 volts at a low amperage. High amperage would require wires the size of a few fingers to move the power but high voltage does not. The capacitor will hold less and less power till it is not discharging at all and your food will not cook. Unless your microwave is fancy it is not worth fixing and the capacitor is not a DIY item due to the ability for a capacitor that size to throw you across the room with more force than an angry gorilla. Tube TVs used 2000 or so volt capacitors and my grandfather still hit the wall on the other side of the living room from it. I have been interested in electricity ever since.

해당 답변은 도움이 되었습니까?

점수 1
댓글 달기

귀하의 답변을 추가하세요

Boomer200 님은 대단히 고마워 할 것입니다.
조회 통계:

24 시간 전: 4

7일 전: 25

30일 전: 104

전체 시간: 3,903