Question about Maytag MMV4205 Microwave Oven

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Maytag MMV4205BA microwave buzz/grind when operating then no power

I have a Maytag MMV4205BA microwave. Today when I was trying to cook some oatmeal, I pressed start on the control panel and stepped away for a second. Next thing I hear is a buzzing/grinding noise and then the microwave just died. This had happened a couple of days before and we readjusted the turntable glass and that seemed to solve it. The outlet works and the breaker wasn't blown. My husband has the microwave open now and we do have a blown fuse -- but no idea what caused it. Help!

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  • mdavis93950 May 20, 2009

    I had the same sound and a friend whi is an installer replaced the fuse and heard the sound also and the oven stopped. He said it was the magnI atron, which is covered under a 5 year warranty. I contacted Maytag and the repair shop that they use said over the phine it may be something elsa and when he came out said it was the transformer. He did not replace the fuse and try to operate it. They charged a fee and gave an estimate that was more than the oven is worth. I'm feeling taken advantage of, Could the problem be the transformer?

  • klr3803 May 20, 2009

    I have had the same problem is the past, however, the most recent incident resulted in a total failure complete with an electrical burn smell. My applicance has only been in use for 1 year 8 months. I had it installed professionally on a dedicated electrical circuit and needless to say, I am disheartened to see other complaints of a similar nature! Will I buy a Maytag product again? Double It!

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You may have some arching inside where your magnatron is located.If you open the door on the right middle part there is a silverplate on the wall .If it is burned you may need to replace magnatron.if you do not seee burn marks it may still be the magnatron hope.that would be the only possible thing that would make the noise other then the mtor plate out of place.

Posted on May 15, 2009

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