Kenmore 80412 Microwave Oven Logo
Posted on Jan 12, 2010
Answered by a Fixya Expert

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Kenmore elite 664625 timer and light work but no heat cooling fan or turntable

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  • Master 15,935 Answers
  • Posted on Sep 30, 2010
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Joined: Dec 21, 2008
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It appears your magnetron or MCU has failed in this instance.

For replacement parts - head on over to PartSelect.com or RepairClinic.com and enter in your full model number for a full parts listing.
I recommend both sites because ...


FixYa has no affiliation with either site - I have been using and recommending them for years - trouble free.

PartSelect has a great schematic database for locating the part on your unit and great "testimonials" for each part that often times includes HOW-TO information.
RepairClinic has pictures of each part they sell and also a great how-to and troubleshooting for basic repairs.


If your unit has never been serviced - there should still be an original service manual enclosed in plastic taped to the inside of the shell.
In the service manual are Error codes, maintenance procedures, and troubleshooting steps you can follow.


Anything too complicated or beyond your scope should be handled by a professional.

If you think you want to tackle the repair - and have gotten stuck on a step - reply to your question and I will be glad to help you out.




Thanks for using FixYa - a 4 THUMBS rating is appreciated for answering your FREE question

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A full Sears/Kenmore model number has 3 digits, a dot, then 8 more digits, such as ###.########
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I'd check to make sure you don't have a door switch that isn't functioning properly. Also, might be a control panel or control panel interface issue.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/david_29ad5d1dd86564b0

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A model number would help us help you pretty specifically, but without it, here's a generic answer.

Generally, the most common causes of a failure to heat are:

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If the inside light, turntable, and internal cooling fan are not working, then it's probably a door switch. See my door switch help file here.

If the inside light, turntable, and internal cooling fan are working, then the problem is likely in the high voltage section.

In that case, here are some links you or someone you know can use for test help, but read their safety warnings first:

http://www.gallawa.com/microtech/diode.html
(if it's not shorted or burned, it's probably okay)

http://www.gallawa.com/microtech/mag_test.html

http://www.gallawa.com/microtech/xformer.html

http://www.gallawa.com/microtech/cap_test.html

You can find links to helpful exploded view diagrams and order parts here.

I'd recommend that your bookmark this link to your favorites.

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

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Oct 18, 2012 • Kenmore 1.7 cu. ft. Speedcook Oven Hood...
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To allow us to help you at no charge, please post a NEW question, and please include your brand name and the full model number from the tag in or on the unit, as well as the answers to these questions:

When you try to microwave are the inside light, internal cooling fan and turntable all working?

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We have a sound clip of what a microwave should sound like when the cooling fan and high voltage section are working.

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