Question about Maytag MMV4205 Microwave Oven

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Dead microwave Microwave went dead after using it to defrost. The lights and everything shut off and won't turn back on. 15 minutes after everything shut off we opened the microwave door to find the inside extremely hot.

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You have likely blown the thermal fuse, its a small silver 1/2" pointy wire on each end and secured by clamp and normally brass crimps to the wires.
usually attached around the fan or motor area.
see this picture

Posted on Jan 27, 2008


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Microwave went totally dead while operating; there is power to the outlet.

If the control panel lights up intermittently, then you either have a loose connection somewhere near the panel, or a failing component on the circuit board itself.

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Sounds like the main fuse blew. It's either near where the power cord enters the cabinet, or behind the control panel (if an over the range unit).

You may also have some type of failure in the high voltage circuit; based on your description of the symptoms.

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The main fuse may be intermittent, causing complete power failure, the other possibility is a defective door switch not operating properly, or loose plug in the power feed, I suggest a technician to take closer look at the system because this could prove tricky to find the culprit.

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Maytag MMV4205BAS OTR microwave does not vent internal steam and the microwave shuts off. It takes about 15 minutes to reset and power back up. What part is bad?

I have this same microwave, and I'm having trouble with it shutting off. It use to go back on, but now it doesn't work at all. I tried replacing the two fuses under the panel, but that wasn't the problem.

After some research and calling vendors, I believe the issue is most likely due to a failure of the magnetron tube which supplies the microwaves. Take it to a repair professional to get a cost estimate on fixing.

This model of Maytag seems to have BIG problems! It's either the tube is out, the turner doesn't work, or it just goes dead. Usually it's after 2-4 years of service. Poor quality... Maytag lost a lot of clients with this product!

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