Question about Maytag MMC5000 Microwave Oven

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The Daewoo 2m218 magnetron in my microwave is starting to malfunction. It smells like it is burning up. I found a magnetron fot it on ebay for 30 dollars. Would it be a good idea to replace the magnetron or just buy a new microwave. Microwave plus trim is about 290 dollars.

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

MicrowaveSvc
  • 9047 Answers

SOURCE: Daewoo KOC1B0K

In that case, the most likely problems are:

- loose or corroded connection at the magnetron
- problem or loose connection on the control unit circuit board
- bad magnetron
- shorted high voltage diode

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

http://www.gallawa.com/microtech/diode.html
http://www.gallawa.com/microtech/mag_test.html
http://www.gallawa.com/microtech/xformer.html

You can visit Daewoo online or call them at 1-800-323-9668 or 1-800-553-4355 to find parts or find your nearest authorized service center to have them do the work.

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


Posted on Jul 21, 2008

  • 4088 Answers

SOURCE: my microwave does not heat and i was told it was

Look for a popped fuse which usually blows when the magnetron goes south. The HV diode occasionally shorts out which will also blow the fuse. The large capacitor can short out as well, but not too commonly. If the transformer goes bad, you can usually smell it. When you test the oven, be sure to have a 'load' in the oven (a glass of water) to prevent arcs and sparks. If you get it seeming to run, but no heat, check the 'stirrer' fan bearing (in the waveguide just before entering the oven cavity) which can arc-through and short-out the microwaves. It would be nice to have a 10kV DC meter to check for the 5-6kV (negative) required to operate the magnetron. You are probably beginning to see why such a high labor charge is levied. Hope this helps!

Posted on Nov 17, 2010

  • 958 Answers

SOURCE: Maytag microwave mmv1153aaw

my guess would be the wave cover. sometimes they smoke and makes sparking sounds. does it still heat food?...if it does, then its not the magnetron.

Posted on Feb 18, 2008

MicrowaveSvc
  • 9047 Answers

SOURCE: Maytag microwave OVER the stove

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 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

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

http://www.gallawa.com/microtech/diode.html
http://www.gallawa.com/microtech/mag_test.html
http://www.gallawa.com/microtech/xformer.html

You can usually find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383

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

Posted on Mar 02, 2008

freetek
  • 5568 Answers

SOURCE: Replace a magnetron tube

Magnetrons cannot be 'repaired,' only replaced. While the cost of them has decreased by about 75% over the last couple of decades, the parts you receive are often inferior to the original and will show this only after installed and operating and then the time required for different tasks may be much longer.  Unless there is something unique about the unit, I advise replacing it.

Posted on Nov 02, 2008

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