Question about Maytag MMV4205 Microwave Oven
The loud noise and no heat means that the magnetron has failed. It the part that generates the microwaves that heat the food. When it fails it shorts out, causing the transformer to heat up. That is what was causing the burning smell. The cost of a replacement magnetron is around $130-150 range so it may not make sense to have it fixed.
Posted on Mar 24, 2011
A failed magnetron does not make noise unless it is internally shorted. I have repaired thousands of ovens, and have never encountered this. A shorted stack rectifier (diode), or a transformer with shorted turns, or a defective (leaky or shorted) capacitor will cause the oven to be noisy, and not heat.
If you need further help, I’m available over the phone at https://www.6ya.com/expert/david_29ad5d1dd86564b0
Posted on Mar 19, 2016
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