Question about Magic Chef MCD1311ST Microwave Oven

2 Answers

Microwave does not cook

I think the magnatron is defective. Is there any kind of reset?

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The magnetron should have a thermostat or some other kind of heat protection device on it, but if it is activated, it will open up the power line, making the oven truly dead until it cools down.

So if it's dead, it may be a fuse or a thermal cutout / thermostat.

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

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 04, 2008

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My microwave oven (Sharp R-9h58) is working sometime fine and sometime not heating. What will be the problem?

Posted on Jun 17, 2009

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1 Answer

Stopped cooking


This is technical!!! Don't know how handy you are but the biggest reason for microwave failure is a diode (HV) between ground and the lead to the magnatron. usually mounted low down low on the right inside of the unit. Also, there are about three microswitches in the door closing latches to make sure the door is properly closed. Sometimes they come loose or fracture the mount. then of course there is the Magnatron its self. I save them from old units. They are different wattages but physically the same and simple to change. Good luck.

If you need further help, reach me via phone at https://www.6ya.com/expert/gary_9c859f4aa7e5ab10

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There is an inline fuse that is accessed by removing the outer casing. Follow the power line in to the magnatron and you should see the fuse. Make sure the fuse that you replace it with is the same as the one you removed. If this doesnt work then the magnatron has gone out.

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This is a sure sign that the Magnatron has burnt out and needs replaced ( This is what cooks the food!) Replace magnatron in oven unit and all should work well!
Please rate my response!
THANK YOU!

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Magnatron is suspect. Need to put a voltmeter on the input (primary) side to the high-voltage transformer (big heavy iron thing in there) Should be getting 120Vac when it goes to cook cycle. Don't touch the other (high voltage) side of this transformer. If the power is there, you are looking at replacing the magnatron. Its affordable if you do it yourself - buy the part on EBAY - lookup "universal magnatron"

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Magnatron is suspect. Need to put a voltmeter on the input (primary) side to the high-voltage transformer (big heavy iron thing in there) Should be getting 120Vac when it goes to cook cycle. Don't touch the other (high voltage) side of this transformer. If the power is there, you are looking at replacing the magnatron. Its affordable if you do it yourself - buy the part on EBAY - lookup "universal magnatron"

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