Maytag MMV4205  Microwave Oven Logo
Posted on Apr 22, 2012
Answered by a Fixya Expert

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Maytag microwave suddenly stopped working, overheated, nothing was cooking.

I thought I set the Microwave timer for 12 minutes, but I might have just pressed 12:00 allowing microwave to cook with nothing inside except turntable. Suddenly there was no longer any activity (lights/display) from the microwave. I checked outlet and it was ok. I did notice what seemed like a lot of heat inside of oven on right side (control panel side). If it's a fuse problem, how do I replace the fuse?

1 Answer

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  • Maytag Master 6,771 Answers
  • Posted on Apr 23, 2012
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It is more than likely the magnetron is fried, to replace fuse! unplug microwave oven, remove top, "several screws" look to the right to the keypad control board, look down to a printed circuit board, clipped fuse should be near by, pop it out and replace with same current rating, assemble before testing, "lethal voltages present"

5 Related Answers

MicrowaveSvc

William Miller

  • 9179 Answers
  • Posted on Dec 11, 2006

SOURCE: LG 1925 Microwave suddenly stopped cooking, other functions work fine!

What you said about the the clock leads me to suggest that you first unplug it for a few minutes then plug it back in. It may just need a good reset. If you don't have your owner's manual you can download one here: http://www.lge.com/support/manual.jsp The mention of odor concerns me. It may just be a bit of food or grease on the waveguide cover, which is a small sheet or panel on the wall or ceiling of the cooking cavity, but it may indicate the failure of a part in the high voltage section. You may have an intermittent door switch. You can see some of my other responses for info on how to get our important text file that helps you diagnose and repair door switches and gives important safety tips.

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MicrowaveSvc

William Miller

  • 9179 Answers
  • Posted on Dec 25, 2008

SOURCE: Microwave Oven Does Not Start Cooking

This is usually caused by either a bad door switch or a loose door switch mount, which are pretty simple problems to fix.

Even though a door switch clicks, it may still be bad inside.

Door switch or mount trouble is usually caused by slamming the door or by opening the door while it's cooking without hitting the Stop pad first.

There are plastic mounts inside the microwave which hold the door switches and onto which the door latches lock when you close the door.

The screws on these mounts may be loose. If they get too loose, the switches will not be activated properly.

Sometimes it's a broken tab on the switch holder, allowing the switch to rotate just out of position. This tab can be hard to see, since it is under the bottom edge of the switch.

One test that sometimes helps is to gently lift up (and/or push down) on the door or handle as you try to start it. If it works or tries to work, then it's a door switch mount or door alignment issue.

If you or someone you know decide to look into it, we have critical information on safety, disassembly and door switches at our site, and our link is at our listing here on FixYa:.

You can find helpful exploded view diagrams and order parts by entering your full model number here.

There should also be a "mini-manual" hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting & testing.

If you don't find yours, or if you want to look at it without disassembling the oven, you can download it here.

If yours is not shown at the parts site or manual site linked above, Please reply back with your brand and model number so we can help you.

If you only need a switch, you can order a universal type here for $5 postpaid.

If you think the problem is on the control panel, we repair these nationwide by mail for $39.95 postpaid in most cases in about a week or so.

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

MicrowaveSvc

William Miller

  • 9179 Answers
  • Posted on Apr 26, 2007

SOURCE: No Heat

This is probably due to a bad door switch, most likely the top one. The microwave got hot because the cooling fan was not running. If you or a friend decide to work on it, we have *critical* safety, disassembly, and troubleshooting info (as well as a text file which helps in diagnosing and repairing door switch problems) at our site, which is linked at our listing here on FixYa: http://tinyurl.com/yzjozk You can find helpful exploded view diagrams and order parts by entering your model number here: http://www3.sears.com/

MicrowaveSvc

William Miller

  • 9179 Answers
  • Posted on Mar 02, 2008

SOURCE: I have a LG Microwave

This is usually caused by either a bad door switch, a loose door switch mount, or a sometimes problem on the control panel.

Even though a door switch clicks, it may still be bad inside. Its continuity must be checked.

Switch or mount trouble can be caused by slamming the door or by opening the door while it's cooking without hitting the Stop pad first.

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

If you need further assistance, please feel free to contact me directly through the links at our site: http://tinyurl.com/yzjozk

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

Anonymous

  • 17 Answers
  • Posted on May 14, 2008

SOURCE: Microwave turns on, but no heat or turntable movement

The problem is that the magnatron is not getting power. Chance is that if could be a bolwn fuse inside the unit. If the fuse don't fix it then that leaves the charging diode, capacitor or the magnatron, or high voltage xformer of which without technical epertize I would not recomend attempting to replace. good luck

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