Question about GE JVM1190 Microwave Oven

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JVM1190 wont cook

I have a GE JVM1190 that will not cook. The clock and all control panel functions seam to work normal. I can make the range fan and lights work, set timers, etc. When I try and cook with the unit the interior light comes on and the timer counts down but no microwave action (fan or unit hum) same with convection bake. Thought it might be a door switch but I would think the clock would not count down or light come on like it is operating, any suggestions?

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  • werlingfamil Nov 09, 2008

    I messed with this today after looking up some suggestions and found the door safety switch was bad. There are two stes of switches on the door latches. The top has a close switch and the bottom has a close switch and light switch. I jumped the switches and was able to make the micro wave work which told me the problem was in the door switches. I alternated jumping one switch and leaving one connected and found that the top door switch was not working. I removed the top door switch housing and removed the switch. i appeared as the switch and trigger were working properly. I opened up the switch and blew out any dust that may have been interrupting the contacts. I reassembled the switch in to the door switch housing and all worked fine. Not sure if it was in the switch it's self or the housing may have not been aligned properly. Alls well that ends well.

  • ajbn Mar 18, 2012

    Had the same problem Mar.2012 & your fix worked like a charm - THANK YOU!

  • Bill Sempel
    Bill Sempel Feb 23, 2013

    Thank you for posting this. I was able to troubleshoot my unit and test resistance of each switch. Found the top switch was not activating.

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  • 43 Answers

You have a blown actuator. This is the device that creates the microwaves that cook the food. The cost of one of these will be as much as a new unit.

Posted on Nov 09, 2008

  • Scott Jelt
    Scott Jelt Dec 03, 2008

    Sounds like you need to be the one answering questions on this site not asking them.

  • jim harrington Jul 08, 2013

    thank you

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I have a GE JVM1190 Microwave Oven. It's sounds


It's cooking when it shouldn't, but the internal cooling fan is not running, so the magnetron is overheating, which can kill it.

Then when it gets hot enough, it trips the magnetron's thermostat, interrupting all power to the microwave. When it cools, it comes back on.

If and when an oven is coming on or doing anything by itself, this is very dangerous and can result in a fire.

So until it is repaired, please leave it unplugged or leave the door open when it's not in use, and of course one should never leave a microwave unattended while cooking.

The problem is almost certainly that the power relay on your control circuit board is shorted.

We regularly repair such control units for customers nationwide by mail for $39.95 postpaid with a one-year guarantee.

Feel free to contact me directly (and please remind me of your full model number from the tag on the unit) for more free information & help.

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

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We see (and repair) this a lot. The problem is on the control panel, which we regularly repair nationwide by mail for $39.95 postpaid in about a week or so.

At our Web site, you can get details of our service, plus we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

This light failure often occurs when a bulb goes out and the filament shorts, or when the bulbs are removed or installed without first unplugging the oven from the power line. Either can cause such a failure on the controller.

The lights can can be inoperable or stuck on or stuck in "night light" mode. Sometimes this will similarly affect the fan operation or inside light, too, as well as other functions.

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If there is no heat when you just cook normally (as opposed to the quick cooking) then some questions arise:

When you hit "Start" to microwave, do the inside light, cooling fan, and turntable all come on?

If not, then you probably have a bad door switch or door switch mount and should see these files:

http://www.microwavedisplay.com/safety.txt
http://www.microwavedisplay.com/disassembly.txt
http://www.microwavedisplay.com/doorsw.txt

If the inside light, cooling fan, and turntable are all coming on, then the problem is in the high voltage section, and then the next questions arise:

Any unusual noises? Is it louder or quieter than usual?

We have a sound clip of what a microwave should sound like when the cooling fan and high voltage section are operating here.

A loud buzz, hum, or groan is usually a shorted high voltage rectifier diode, but a sound like gurgling into an empty coffee mug is one symptom of a failed magnetron, and yet the mag can be bad without that sound.

If there's no unusual noise, it may just be a bad connection at the magnetron.

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


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

You can find links to helpful exploded view diagrams and part ordering help here.

I'd recommend that your bookmark this link to your favorites.


Accessing some parts may require you to pull the oven from the wall and remove the cover.

If so, the installation instructions are very handy, and it's best to have two people since the microwave can be heavy and awkward.


You can download GE owner's manuals and installation instructions here.

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It sounds just like the magnetron is bad, overheating and opening the thermostat. This is how it would work if that were the case.

 

One other thing is to be sure that the cooling fan is running and that you feel air flow.

 

You should check the air filter and grille, as well as the outside vent for any blockage.

 

If you or a friend decide to work on it, we have *critical* safety, disassembly, and troubleshooting info at our site, which is linked at our listing here on FixYa: http://tinyurl.com/yzjozk

 

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