Question about Microwave Ovens

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Thermal fuse I need to replace the thermal fuse in a kenmore model #721.80402 microwave hood combination

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  • tjames Nov 15, 2007

    Nothing works. No display of anykind.

  • Anonymous May 25, 2008

    712.80402 Display dead. Oven light comes on when door open. One button on control panel will beep once. Then moves to another random button. Removed control panel, didn't see any fuses. Sears parts page says "Sorry. no parts available for this model."




  • wvelkhtr Aug 01, 2008


    Replaced the fuse. There is no current to control panel.dj

  • Anonymous Mar 12, 2014

    kenmore microwave 721.80412 where is the thermal fuse

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Kenmore model721-8040 nothing works no light or controll panel

Posted on Feb 01, 2009

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  • Microwave Ovens Master
  • 9,098 Answers

You can usually find an exploded view and order parts by entering your full model number here: http://www3.sears.com

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

Posted on Nov 28, 2007

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1 Answer

Kenmore microwave hood combination, The fan wont


With the full model number, chances are we could have helped you more.
If the cooktop lights recently failed, it may need circuit board repair.

Or it may be a failed hood TCO.

You can find links to helpful exploded view diagrams and part ordering help here.

I recommend that you bookmark that link to your favorites.

Oct 15, 2013 | Microwave Ovens

1 Answer

Dead microwave!


Hi Kevin

If your microwave oven doesn't seem to work at all, check these:
Fuses Usually, when your microwave oven doesn't work it all, the internal fuse (thermal fuse) is blown. This fuse protects both you and the oven. When it blows, you need to have a qualified appliance repair technician replace it.

Door switch If the fuse isn't the problem, check the door hooks and the door-release button. When these are broken, the door switch doesn't activate, so the oven can't work.

If still you are unable to diagnose the issue then it is recommended to call a local repair center for this to get fixed as Microwave usually have high voltage even when it is turned off.

Please do rate the solution as FixYa and revert for further assistance.

Thanks
Rylee

Apr 24, 2009 | Kenmore 63672 Convection/Microwave Oven

1 Answer

Not heating


Hope you got a good deal, because you can replace all the microwave components for about $200.00.

It's going to be one of the following components -

1) Fuse
2) Diode
3) Capacitor
4) Transformer
5) Magnetron

Fuse is easily checked. If it's blown, replace with an identical type and rating. If it blows again, then dig deeper.

Diode is very hard to test, and cost is cheap. Replace it.
Capacitor is very hard to test under load, and is a little more expensive. Replace.

Transformer can be tested if you know what your doing.

Magnetron is not easily tested without harm to humans. Replace with same type or approved interchangeable equal.

Let me know your findings and I can help more if needed.

Jan 21, 2009 | Kenmore Microwave Ovens

1 Answer

Model #721.66463.500 Kenmore elite microwave hood


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

When checking thermostats, if it has a hood fan thermostat, that should read open, as opposed to the others, which should read closed.

If you or someone you know 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://www.searspartsdirect.com

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

Jun 27, 2008 | Kenmore 64683 Microwave Oven

2 Answers

Microwave cycles off


Does this happen just at the full power microwave cook setting?

Have you tried defrosting and doe sit do it on this setting? Does it run any longer in defrost mode?

Dec 02, 2007 | Microwave Ovens

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