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Amana Microwave I have a over the stove type Amana radar range. It started giving off a burning smell like electrical or something and now has quit heating entirely. It still runs just no heat. Any Ideas

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I would suspect a shorted high voltage rectifier diode, a bad high voltage transformer, or a bad magnetron, in that order.

Here are some links you or someone you know can use (in order given) for test help, but read the safety warnings first:

http://www.gallawa.com/microtech/diode.html
http://www.gallawa.com/microtech/xformer.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 Sep 16, 2008

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You're describing a common smell that goes along with a magnetron tube that has failed. The magnetron tube makes the microwaves, and will eventually fail if you keep a microwave long enough. They can fail in a couple of different ways, and one is to short out accompanied by that burning smell. It's probably not worth trying to repair your oven because of its age. I don't believe the magnetron is available any longer. If it is, it will be costly, and replacing the tube is best left to a professional because of safety concerns. Your most economical choice would be to replace the oven.

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WHEN START BUTTON PUSH THE MICROWAVE HAS A DEEP HUMM AND SMELLS LIKE SOMETHING ELECTRICAL BURNING. OTHERWISE SEEMS NORMAL BUT WON'T HEAT WELL. I QUIT USING IT. OPENED CASE AND DO NOT SEE BURNT COMPONETE.


It sounds like the magnetron may have either failed or is not being supplied with the extremely high voltage required to run it.
Make sure the !!!!capacitor is discharged!!!!! before attempting any sort of repair.
Check the door interlock switches first then the high voltage diode with either an AVO model 8 on high resistance range for short circuit, the capacitor can fail and go short circuit, the feed fuse on the primary of the high voltage transformer and then finally, the magnetron is best checked by substitution.
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Thanks

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Maytag customer service should be able to help but I think you may need to call instead of e-mailing.

Try them here: http://www.maytag.com/support/contact_us.jsp

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

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