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Aug 12, 2011 - 10 posts - 2 authors
My Whirlpool MT4155SPS-2 microwave oven has recently started to buzz loudlywhen operated. The sound is getting louder and more frequent ...
Whirlpool making intermittent loud buzzing noise Microwave ...
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If the loud buzzing noise is present when cooking food, the magnetron is the likely cause, some models are louder than others. But if the buzzing noise is there without the microwave running it should be checked. No! this something that should be checked by a professional for safety.
When the oven does not heat, the problem is usually due to the magnetron failing. It the part that generates the microwaves that heat the food. It fails by shorting out causing a loud buzzing noise. The burning smell is the being magnetron overloaded due to the short. It not worth fixing since the replacement cost of a magnetron is close to the price of a new oven. Sorry.
Well, if there is not heating the food and making a loud buzzing or humming sound when it is on, then the magnetron has failed. It typically shorts out and fails. The magnetron for this cost $140 plus the cost of the service call, you're better off buying a new oven. Hope this helps.
The loud buzzing you hear is the sound of the magnatron tube.That is what emits the microwave radiation and buzzing should be normal. The mag tube may be nearing its end at witch time you will hear no buzzing and hence no heating of foods. Replacement can be costly depending on the model so most people just opt for a new one. Hope this helps
yes anything can be fixed but a do it yourselfer i reccomend against this cause thats a radiated element in the micro
recommend go out and purchase a replacement go with G.E. they have the 7 year warranty great little micro. too change out is easy
The noise is coming from the high-voltage transformer being overloaded
by something shorting it out. Either the magnatron or the
high-voltage capacitor and diode. Replace the capacitor and
diode then if still not working, replace the magnatron. Its only
affordable if you do it yourself - buy the part on EBAY - lookup
"universal magnatron"
Hope ya fix it!
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