Question about Kenmore 62622 Microwave Oven

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Why would my kenmore micro wave model 721.66463500 just go dead, no power

My kenmore micro wave model 721.66463500 just went dead, no power at all, any suggestions?

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James Johnson

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There may be a weakened connection around the main power supply 'Transformer'. Sometimes the connections can overheat but if they are removed and replaced it may again make contact. I've had a similar problem and found parts from similar brands to replace the connecting/wiring parts. I soon realized that I could have removed the extra pieces around the wires without causing any electrical problems. That is the minor repair. The major repair would be to replace one of the main features (large or small) which assist the transformer in power functions. Take your time examining the tiniest parts and pieces.

Posted on Jun 24, 2014

  • James Johnson
    James Johnson Jun 24, 2014

    There may be a weakened connection around the main power supply 'Transformer'. Sometimes the connections can overheat but if they are removed and replaced it may again make contact. I've had a similar problem and found parts from similar brands to replace the connecting/wiring parts. I soon realized that I could have removed the extra pieces around the wires without causing any electrical problems. That is the minor repair. The major repair would be to replace one of the main features (large or small) which assist the transformer in power functions. Take your time examining the tiniest parts and pieces.

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raj somaiya

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SOURCE: Kenmore micro wave oven 1998 model with error code

The relay on control board is getting loose, so the f6 error is coming up..click this link for more help:-- http://technoanswers.blogspot.com/2011/06/kenmore-micro-wave-oven-shows-error-f6.html ----------- This should help.Thanks.Helpmech.

Posted on Jun 11, 2011

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Microwave sometimes heats up food and sometimes it does not.


usually when you kill the power and then when you put power back on the machine works it's the computer board that's bad.all you're doing is resetting the board just like your house computer,if something happens to it you shut it down and reboot it,that's what you're doing with the micro wave just rebooting the board.here's the funny thing about micro waves sometimes the part you're gonna change is almost the same price as a new micro wave so i would first check how much the board is,i went on sears and they have the board for 115.00 repair clinic for 235 part number WPW10216347 they don't make this model anymore but you can get a stainless micro for around 290 to 300 dollars and if you buy the same brand all you should have to do is remove the bolts up above that hold it in place and remove the micro wave and the same brand should mount the same way so you won't have to drill new holes or replace the back metal panel.if i were you i would replace the unit instead of the board repair clinic shows most of the parts for this model out of stock so it might be a while before you can get any parts for this model but this is up to you.good luck with your micro wave.one more thing when you were in there did you see alot of grease,this is usually the cause of no heat,the grease from cooking on the stove top gets into the micro wave and on the mag tube and damages it,if there was grease in there i would just replace the unit

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1 Answer

When power went off and then came back on, screen on micro wave continually shows demo and I cannot set time


The first thing I would suggest is a hard reset. Unplug the unit for a minute or so. Then plug it back in, set the clock and try again.

If that doesn't work, leave it unplugged for about 5 minutes and try again.

If it still won't work, then you may have a bad membrane keypad / DP circuit.

If your model is NN-P295SF, the service is here.

Parts can be ordered from Encompass here.

Aug 19, 2011 | Panasonic NN-P295SF Microwave Oven

1 Answer

My Emerson microwave is about 2 years old. I washed it just like I do every week and the power went out on it.


you mean it want power up or want work when you press the star buttom?
1. check the fuse if no power.

2. If it doesn't work when closing the door after setting timer it is the micro switch that the metal lach hits when the door close.

3. unpluge the micro wave unscew the scews to the cover of the microwave remove the cover. up front by the door you will see the micro switch maybe (brown,black,white,red/white ) what ever color it is disconet it take it to the hardware store buy a new one and replace it,themreasemble your micro wave.

Oct 30, 2010 | Emerson Microwave Ovens

1 Answer

Dead microwave


Since it's less than one year old, it should be fully covered under warranty. I'd suggest contacting the manufacturer to get it fixed free.

Please write back with your brand and model number if you need further help.

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

Jun 30, 2008 | Magic Chef CMV1000B Microwave Oven

1 Answer

I have a emerson micro wave. Its only been used lightly for 3 months. It just when dead no power at all, no lights.


If you bought it only 3 months ago, it should be fully under warranty.

I would suggest you let Emerson repair it for you at no charge.

Get help locating a servicer or parts at 1-800-695-0098.

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

May 06, 2008 | Microwave Ovens

2 Answers

OLD Kenmore Microwave Oven


A microwave can be dead for many reasons.

If it goes dead for a while during or after cooking then comes back on, the magnetron is probably overheating and causing the magnetron thermostat to open. Then when it cools, it closes the circuit and allows power through again.

If it's intermittent or random, it may be a bad connection, usually on the control board or a loose fuse holder.

If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.

If it went dead a few seconds after pressing the Start pad, that's usually a failing high-voltage transformer.

If the fuse is good, it may be an open thermostat or thermal cutout on or near the magnetron or on top of the cavity / body of the oven.

If you or a friend decide to look into it, we have critical safety information and disassembly information at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk
You can probably find an exploded view by entering your FULL model number here: http://www3.sears.com (the 3 is correct)

Dec 05, 2007 | Microwave Ovens

1 Answer

Microwave over the stove


If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.

If it went dead a few seconds after pressing the Start pad, that's usually a failing high-voltage transformer.

It may also be a problem with a door switch or door switch mount.

If you or a friend decide to look into it, we have critical safety information and disassembly information at our site, linked here on Fixya: http://tinyurl.com/yzjozk
Please write back with more details if you need further help.

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

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