Question about Kenmore Microwave Ovens

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Kenmore elite microwave model no. 721.66339011 just stopped heating ...anyone know what or how to fix?

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If the turntable still rotates, the microwave emitter, the HV capacitor or its HV fuse has failed.

If the turntable has stopped also, a door interlock switch has probably failed, or a mainboard fuse has blown.

Never mess with the insides of a microwave unless you know exactly what you are doing. In there is a HV capacitor which can give you a lethal shock even when the oven is not plugged in.

If unsure take it to a service tech and ask for a cost estimate. He will understand as many microwave repairs are uneconomical to do, and you may be better off to buy a new one, with a warranty too.
.

Posted on Dec 17, 2016

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Hello, the fuse normally is located behind the control panel and easily accessed by removing the panel. Here is a schematic to assist you in locating the part...

Kenmore elite microwave model no. 721.66339011 jus - 26402427-3fsj1nnjdphh522rrvnz5mti-2-0.png

Posted on Dec 17, 2016

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6 Suggested Answers

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Posted on Jan 02, 2017

MicrowaveSvc
  • 9047 Answers

SOURCE: KENMORE MICROWAVE (HOUSEHOLD) LOCKED

It sounds like you press STOP two or three times to lock it. Maybe that (or another key) will unlock it.

The lock / unlock procedure will be covered in your owner's manual.

Or you can try a hard reset - unplug it from the wall for one minute, then plug it back in and try again.

If you don't have your manual, you can get one here. (Enter your model number without any spaces)

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

Posted on Jul 01, 2008

MicrowaveSvc
  • 9047 Answers

SOURCE: Owners manual for Kenmore Elite Microwave Model 66462

A full Sears/Kenmore model number has 3 digits, a dot, then 8 more digits, such as ###.########

You can just enter your full model number at the Sears parts site.

On the resulting page, look to the right for the blue "View manuals" button. Click there.

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That Sears-related site has many free manuals. While the manuals they list there are all free, they will ask you to register.

Many times, the owner's manual will have the installation instructions inside.

If yours is not listed there for free, you would have to order it through the
Sears parts site.

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

Posted on Jan 18, 2009

MicrowaveSvc
  • 9047 Answers

SOURCE: Kenmore Elite Advantium 120, model # 363.63693301,

You probably just have a bad primary interlock (upper door switch) or its mount is loose or broken.

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.

If the switch mount is broken, it's usually more economical and safer to add a dab or two of hot glue to the mount to secure the switch. Let it cool for about 30 minutes before using.

We have the service / repair manual for this model and have uploaded it to our site here to help you.

It will give you safety info, step by step help in disassembly, troubleshooting tips, and part numbers.

Most computers will open this document automatically, but you may need the free Adobe Reader.

For more on door switches & mounts, see:
http://www.microwavedisplay.com/doorsw.txt

You can find helpful exploded view diagrams and order parts by entering your full model number from the tag on the oven here.

If a switch is all you need, we offer a universal type for only $5 postpaid which you can order here.

But if you need any cosmetic parts,
enter your full model number at the Sears parts site.

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

Posted on Jul 13, 2009

  • 1 Answer

SOURCE: My Kenmore Elite Microwave Model No. 721.64683300

My Kenmore Elite Microwave Model No. 721.64683300 does not seem to be heating well and will shut off and flash an F9 code. What does the F9 code mean

Posted on Jan 19, 2010

  • 1 Answer

SOURCE: My Kenmore Elite over the range microwave model

Just had this happen - the repair guy says it is the inverter. And they have stopped making the part so it cannot be fixed!!! When did you buy your unit?

Posted on Dec 23, 2010

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