Question about Jenn-Air JMV8196 Microwave Oven

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Everything works but no heating?

I have JMV8196AAS unit and today we realized that when we start the microwave the overall sound is louder and there is no heating??

If I use a sensor cooking (patato) seems like working ..as sound is normal sound. everything else seems to be working??? The turntable, the lights, etc ...but there is no heating and unussual sound ?? Can anyone help??

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  • Crcranes2003 Feb 25, 2009

    everything works on JMV8196AAS but no heat!

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With inside light and turntable on, louder sound, and no heat, this is usually a shorted high voltage rectifier diode or a bad magnetron.

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

You can usually find helpful exploded view diagrams and order parts by entering your full model number here.

There should also be a "mini-manual" hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting & testing.

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

Posted on Aug 18, 2008

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Our Jenn-Aire Model JMV8196AAS Microwave is not heating anything.



If it is working but not heating, then test the high voltage capacitor,the rectifier diode.or the magnetron. If all this are fine, test the control board.If turntable is not running check also the door switch.

The diodeand capacitors can be tested. The capacitor must be allowed discharge before testing, or you risk to get electrocuted, evenif power is off.Capacitors can get discharged by shorting their two contacts.
Before replacing the magnetron test also the control board.
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All locations, and description of this parts can be located using the diagram here: Counter top.

Parts must be tested to find out what is wrong.

Remember that microwaves are potentially dangerous devices if not repaired properly, the job must be done by a competent person.
A microwave energy leakage test must always be performed when the oven is serviced for any reason.

Regarding parts, contact the seller here to purchase parts.

You can also order from MicrowaveSvc , they also provide parts.

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