Question about Jenn-Air JMC8127DD Microwave Oven

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Start button on Jenn Air microwave quit working

We installed a used Jenn Air microwave that we thought was in good condition (we tested it out before the 3 hour job to install underneath the cabinet!) I was able to heat three items, each for no more than two minutes. On my fourth item, as i pressed the "start" button--nothing. Every other button works except "start". Does anyone know how to begin to fix this? thanks!

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  • William Miller
    William Miller May 11, 2010

    Sounds like two separate problems, but I want to get something clarified.

    You said,"I was able to heat three items, each for no more than two minutes."
    Did the microwave stop or shut off after some period of time before it was supposed to?

    Failure to start when you press the Start pad is usually a bad door switch or door switch mount.

    But please clarify so we can continue helping you, and please reply back with your full model number from the tag so we can help you.

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  • Contributor
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Heating element or capacitor fuse

Posted on Sep 04, 2017

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snakehead
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SOURCE: GE Microwave Model JVM1650

the diode is open when the voltage arive at the anode junction it locks off due to the diode is not passing the voltage,change the diode and the microwave will resume operation.good luck.

Posted on Aug 04, 2007

SOURCE: LMV1630 doesn't heat

check control panel circuit, and related circuit.

Posted on Oct 29, 2007

MicrowaveSvc
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SOURCE: Jenn-Air JMC7000 Microwave Stopped working

So it's dead? (No display, no inside lights, no beeps?)

A microwave can be dead for many reasons.

If it goes dead for a while during or after cooking then comes back on, the magnetron is probably overheating and causing the thermostat to open. When it cools, it closes the circuit and allows power through again.

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

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 the fuse is good, it may be an open thermostat or thermal cutout on or near the magnetron or on top of the cavity / body of the oven.

If you or a friend decide to look into it, we have critical safety information and disassembly information at our site, linked here on Fixya: http://tinyurl.com/yzjozk

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

Please write back with more details if you need further help.

We appreciate your thoughtful rating of our answer.

Posted on Nov 18, 2007

  • 579 Answers

SOURCE: How do I fix a Jenn-Air JMC7000 that does not heat up items?

The noise is coming from the high-voltage transformer being overloaded by something shorting it out. Either the magnatron or the high-voltage capacitor and diode. Replace the capacitor and diode then if still not working, replace the magnatron. Its only affordable if you do it yourself - buy the part on EBAY - lookup "universal magnatron"
Hope ya fix it!

Posted on Jan 06, 2008

MicrowaveSvc
  • 9047 Answers

SOURCE: Jenn-Air JMV8000BAW

I always recommend that folks use the vent / hood fan anytime they're cooking with the stove.

Was it on at the time?

If not, moisture can certainly get into the works and cause problems or damage. If it dries out, it's fine but if not, it could cause damage.

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

Posted on Feb 17, 2008

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Accessing the oven cavity thermostat for testing and possible replacement will require you to remove the oven from the wall and take off the outer cover.

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