Question about Maytag Appliances Over-the-Range Microwave Oven

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Not heating, display blank

The LED display is very faint or blank and will not heat food or water. is this worth fixing or is it better to just replace it. model # MMV4205BAB

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  • 9,047 Answers

Quite often this is a failed electrolytic capacitor on the control circuit board.

We regularly repair these control units for customers nationwide by mail for $39.95 postpaid with a one-year guarantee.

At our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

Feel free to contact me directly (and please remind me of your full model number) for more information & help.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

William E. Miller
prototech@usa.net
http://www.microwavedisplay.com

not heating, display blank - 335237d.jpg

Posted on Jun 05, 2010

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1 Answer

Food is not heating, can u help me?


If the only problem is that the food does not heat up, but the rest of the oven works, like the light, turntable, display and keypad, then the problem is with the magnetron circuit. It the circuit that generates the microwaves that heat the food. It can be expensive to fix since the replacement magnetron can cost as much as a new oven, so it rarely worth fixing. The symptom of a shorted magnetron is a loud buzzing sound when you try to run the oven.

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Microwave Oven Basic Troubleshooting Tips

heatman101
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This is not something that you can fix yourself. Most likely, the magnetron needs replaced, and this must be done by a service department. So, if the microwave is relatively new and expensive, take it in for service. If it's an old one or relatively cheap model, you would be better off replacing it because the cost of the repair would likely be more than the unit is worth. Hope that this helps.

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