Question about Jenn-Air Microwave Ovens

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1997 Jennair microwave M170W

This microwave keep;s blowing fuse - any ideas? Used very little - no long term heat happening in there......a puzzlement!

Bakers Cleveland GA
www.muttbaker.com

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If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.

If it went dead a few seconds after pressing the Start pad, that's usually a failing high-voltage transformer.

If it goes dead or blows the breaker when you plug it in or open or close the door, then there's a problem with a door switch or door switch mount.

If it's intermittent or random, it may be a bad connection, usually on the control board or a loose fuse holder, or even an intermittent fuse.

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

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

Posted on Jun 08, 2008

  • Lawrence
    Lawrence Aug 27, 2014

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I hope this helps a little.

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Assuming the turntable is working and the power at the outlet is correct (110 to 125VAC) then you almost certainly have a failing magnetron.

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.

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/mag_test.html (continuity can be good even though it is bad!)

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There should also be a "mini-manual" (tech sheet) hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting, testing, and locating components.

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

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