Question about Microwave Ovens

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JennAir Microwave worked one minute then won't the next.

My JennAir just quit working last night. The control panel still works. The time is displayed and you can select a cook time but the microwave never comes on when you hit the start button. The timer begins counting down the time and the light comes on, but nothing happens. Any advice would be much appreciated. I saw someone else had this probloem but I didn't see any answer. I would greatly appreciate any suggestions you could give me. My husband put in a new timer when it went out but neither of us know what this could be. Thank you for any help you might could give us.

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  • BarbRick Jan 20, 2008

    Thank you for your help. If anyone has this problem you might look at ... or have someone check the Micro Switch in the door.

    This is what it was on our. We have a Jen-Air JMC 7000 ADB.

    I think there are three in Micro Switch's in our unit.

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  • 139 Answers

If this microwave is more than a couple of years old, it's possible that the magnetron tube or a rectifier has burned out. You'll probably need to take it to an experience microwave service technician to get a diagnosis.

Posted on Jan 17, 2008

  • networkmagic Jan 20, 2008

    Thanks for the update...door switches are also a common problem...and much less expensive to fix!!

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MicrowaveSvc
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SOURCE: jennair

Do the inside light and cooling fan come on when you press Start?

If so, the problem is likely to be in the high voltage section.

If not, then the problem is likely to be related to the door switches or possibly the controller.

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

- bad door switches or door switch mounts
- loose connection at the magnetron
- problem or loose connection on the control unit circuit board
- bad magnetron or other high voltage part (such as a shorted diode)

If you or someone you know decide to look into it, we have critical safety information, info on door switch diagnosis and replacement, and disassembly information at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

You can usually find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383

Your model may also have a "mini-manual" hidden inside the unit behind the control panel, which is very helpful when troubleshooting.

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

Posted on Mar 30, 2008

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