Question about Maytag MMC5000 Microwave Oven

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Microwave will not heat food

My microwave is lg model ms-1942g,poewer is ok,fan,fuse,light,timer all are working.is it possible the magnetron has failed if so how do I digonse it?if not what is the problem

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  • Maytag Master
  • 9,098 Answers

Found this under Maytag instead of LG, but will be happy to help.

Generally, the most common causes of a failure to heat are:

- bad door switches or door switch mounts
- loose connection at the magnetron
- problem or loose connection on the control unit circuit board
- bad magnetron or other high voltage part

If you or a friend decide to look into it, we have critical safety information, info on door switch diagnosis and replacement, and disassembly information at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

Magnetron diagnosis is here: http://gallawa.com/microtech/mag_test.html

We're happy to help and we appreciate your thoughtful rating of our answer.

Posted on Dec 08, 2007

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MicrowaveSvc
  • 9098 Answers

SOURCE: microwave will not heat food

Generally, the most common causes of a failure to heat are:

- bad door switches or door switch mounts
- loose connection at the magnetron
- problem or loose connection on the control unit circuit board
- bad magnetron or other high voltage part (such as a shorted diode)

If you or someone you know decide to look into it, we have critical safety information, info on door switch diagnosis and replacement, and disassembly information at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

Here are some links you or someone you know can use for test help, but read their safety warnings first:

http://www.microtechfactoryservice.com
http://www.microtechfactoryservice.com/cap_test.html
http://www.microtechfactoryservice.com/diode.html
http://www.microtechfactoryservice.com/mag_test.html
http://www.microtechfactoryservice.com/xformer.html


We\'re happy to help and we appreciate your thoughtful rating of our answer.

Posted on Apr 23, 2008

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1 Answer

I have a GE Spacemaker Over-The-Range Microwave Model #JVM1533WD002 that has worked perfectly for 10 years. Now everything still works, except it doesn't heat the food. Where is the fuse located and how...


A common symptom of a failed magnetron is a failure to heat with everything else (magnetron fan, stirrer, timer, etc.) working fine. Check the GE manufacture date for the unit on its nameplate to determine the age of the magnetron. For GE models of the past, magnetrons had a 10 year parts replacement warranty. Magnetrons can be expensive, so you need to weigh all your options, i.e., repair versus replacement, before you commit to one solution.

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My Whirlpool microwave model MH6130XEB-1 made a pop noise and now will no longer heat food. Everything else works fine, clock, timer, fan, turn table, etc. Is this a fuse problem?


It can be the fuse supplying the magnetron, or the magnetron itself which has failed. Another suspect is the high voltage capacitor in this circuit.


Don't try to fix this yourself as the internals of a microwave are dangerous, with high voltages even when unplugged.

Aug 27, 2013 | Microwave Ovens

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My microwavedoesn't heat is there a fuse that may be blown


No! the fuse is fine, there are three likely causes, magnetron, "heats food" cracked high voltave diode, or a shorted high voltage capacitor.

Mar 24, 2012 | Whirlpool MH2175XS Microwave Oven

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Lights, Fan works but it doesn't "nuke"


Your magnetron may be shot. Best to go shopping. Not many repairable parts on a microwave. Plainly, it's more expensive to have iy checked out.

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Microwave won't heat, already tried replacing fuse. Timer, fan, clock work.


In all probability, the magnetron has died. The magnetron is the part that creates the microwaves that cook your food. Magnetrons are usually covered under a 5- or 10-year warranty and replacing them yourself can be pretty dangerous. I'd suggest you call a technician.

Jul 17, 2009 | GE Microwave Ovens

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Doesn't heat


Sounds like the magnetron has failed possibly. This is the component that produces the microwaves that heats the food.

The cost of the magnetron is about 95% of the cost of a microwave oven. Most people don't, for this reason, replace the magnetron, they replace the whole oven which is probably what you will end up doing.

There is a possibility that the circuit that provides power to the magnetron is faulty and you need to take it apart, find the proper electrical leads and test them with a volt meter. To do this you have to remove it from its mounting and take it apart. It is a fairly lengthy process however.


Benjamin

Apr 24, 2009 | Microwave Ovens

1 Answer

Microwave will not heat food


Generally, the most common causes of a failure to heat are:

- bad door switches or door switch mounts
- loose connection at the magnetron
- problem or loose connection on the control unit circuit board
- bad magnetron or other high voltage part (such as a shorted diode)

If you or someone you know decide to look into it, we have critical safety information, info on door switch diagnosis and replacement, and disassembly information at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

Here are some links you or someone you know can use for test help, but read their safety warnings first:

http://www.microtechfactoryservice.com
http://www.microtechfactoryservice.com/cap_test.html
http://www.microtechfactoryservice.com/diode.html
http://www.microtechfactoryservice.com/mag_test.html
http://www.microtechfactoryservice.com/xformer.html


We\'re happy to help and we appreciate your thoughtful rating of our answer.

Apr 20, 2008 | Maytag UMV1152BAS Microwave Oven

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