Question about Kenmore 62702 Microwave Oven

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KENMORE MODEL 721.80419500 doesn't heat. Power button irresponsive. Light comes on. Turntable works.

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  • William Miller
    William Miller May 11, 2010

    Any unusual noises? Is it louder or quieter than usual?

    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 maybe an hour. Then let us know if the hard reset does not fix it.

  • William Miller
    William Miller May 11, 2010

    Any unusual noises? Is it louder or quieter than usual?

    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 maybe an hour. Then let us know if the hard reset does not fix it.

×

6 Suggested Answers

  • 43 Answers

SOURCE: microwave no heat

The "HUMM" indicates a breakdown in the High Voltage Side. The loud "POP" was the breakdown. You have only four Components in the High Voltage side.

1. High Voltage Transformer. You can eliminate this as the problem. Why? If it was the problem it would have blown the line fuse, and would have given off a burned transformer smell.
2. High Voltage Diode. Usually will Burn or Pop when shorted, but will then OPEN the Circuit and there is no "HUMM".
3. High Voltage Capacitor.This is the Silver Can with the two terminals on top. It can SHORT internaly between the plates (the two terminals) and give the "HUMM".
4. Magnetron. This is my number one suspect. A SHORTED Magnetron.

Posted on Feb 03, 2008

SOURCE: kenmore over the range microwave oven

hi how r u
i want to know what's the average power that i should put it on my microwave
thank u

Posted on Apr 21, 2008

MicrowaveSvc
  • 8820 Answers

SOURCE: Start button on microwave does not work

Some numbers are missing off that model number. Would that be model 721.62622200?

(If not, please reply back with the correct model number off the tag)

If it's cooking with the programmed buttons, but Start is not working, it sounds like the keypad has failed.

The keypad for model number 721.62622200 is no longer available as a separate part.

So you'd have to buy the entire controller assembly, which includes the plastic frame, keypad, and circuit board, etc.

It is part # 4781W1M307A and it runs $110.10 at the Sears parts Web site.

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

Posted on Jul 20, 2008

MicrowaveSvc
  • 8820 Answers

SOURCE: turntable on Kenmore Elite will not turn?

The turntable system consists of the motor, the coupler, the turntable support with rollers, and the tray.

You can see and hear a video of how a turntable motor should sound when you rotate it by hand.

If yours is not set to be off via the control panel, and it won't rotate or it sounds like it's grinding, etc., you may have a bad motor or plastic coupler.

If you don't have your owner's manual, you can just enter your full model number at the Sears parts site.

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

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

26197a4.jpg

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.

That's where you could also order any needed parts and find handy exploded parts views.

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

Posted on Jan 04, 2009

bestdarngood
  • 3037 Answers

SOURCE: yesterday microwave worked fine today it doesnt

Sounds like the magnetron has failed. This is the component that produces the microwaves that heats the food.

The cost of the magnetron is about 95% of the cost of a microwave oven. Most people don't, for this reason, replace the magnetron, they replace the whole oven which is probably what you will end up doing.

There is a possibility that the circuit that provides power to the magnetron is faulty and you need to take it apart, find the proper electrical leads and test them with a volt meter. To do this you have to remove it from its mounting and take it apart. It is a fairly lengthy process however.


Benjamin

Posted on Apr 26, 2009

  • 1 Answer

SOURCE: kenmore microwave model 721-63252301 - no heat

we are going to try to find a fuse and replace that or just buy a new microwave

thank you

Posted on Jun 06, 2009

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

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