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guillermo ibanez Posted on Dec 04, 2014
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How do I fix a microwave oven, display flashes and keys pressed are ignored. It happened after 40 minutes working in convection mode.

I have removed the lid, nothing abnormal or burnt on the electronics side.

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Gil Shultz

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  • Microwave Ovens Master 3,464 Answers
  • Posted on Dec 04, 2014
Gil Shultz
Microwave Ovens Master
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It sounds like the electronics are overheating. Be sure all the ventlation is clear and operating.

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Related Questions:

0helpful
1answer

Maytag mmv4205bas cannot press keys

test this steps and fix it. GOD BLESS YOU


  1. Controller is confusedA power surge or random non-reproducible action of the universe may have resulted in the controller's program ending up in an infinite loop. Pull the plug for a minute or two to reset it.
  2. Defective Interlock switchesThis can result in the controller thinking the door is open and ignoring you.
  3. CleaningCleaning solutions (spray cleaner) may have gotten inside and shorted out the touchpad or controller. If this happens remove the touchpad, let it air dry for a few days, and then attach it back on the microwave.

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Microwave plate turner keeps spinning even with door closed and microwave turned off

My microwave is doing this as well; It's a frigidaire model #FGMV154CLFA.

After using the microwave part (it is also convection), the light stays on in the microwave and the turner keeps turning.

And I've only used the convection part of my microwave a couple times and I'm not sure if I was successful. While trying to cook something in convection mode, I pressed convection, then pressed the temp i wanted, then convection, then keyed in the time I wanted the item to cook. The microwave started and the timer started counting down but the countdown stopped with 8 minutes left? I left it alone to see what would happen and it never finished so I restarted the process again.

PS..I've never gotten an error code
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My microwave/convection oven (a GE unit model JES1290SK) started beeping every few seconds and displaying F6 on the control panel. I unplugged it and waited several minutes and when plugged in it displays...

The technical sheets in my files do not list F6 on the error code chart for GE microwaves.

Generally, these are the error codes possible on GE microwaves:

F1 open thermal sensor (convection models)
F2 shorted thermal sensor (convection models)
F3 key panel shorted for more than 60 seconds
F4 open humidity sensor
F5 shorted humidity sensor

There should be a "mini-manual" (technical 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.

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At our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

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

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer
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My wife cannot wait forever for me to solve the problem with our Microwave....so I nhad to bite the bullet and take it in to LG for repairs.

Thanks for the good site
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Will not heat on one touch mode but will heat on convection made

your microwave magnetron part is probably broken you need to send this to a shop im afraid, might cost you 40- 60 $
cheers
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Microwave/Convection Oven has mind of its own: turns to Crisp mode on its own.

Yes this is a touchpad issue. As you have noted the crisp button is stuck and this is the cause of this. You can try removing the keypad and push up the pressed button. If its jammed then replacing it is the only way.
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Panasonic NN-T793 not turning on and nothing is displayed

Hi, if it went dead while it was in use, then it sounds like the HV section (magnetron, HV diode, inverter section - if used, etc) has failed, possibly only economic to fix if it is a convection microwave.
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Pressing "timer/clock" button 4 times turns on and off demo mode.
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I started having the same problem with my KBMC140HSSO. You cannot see the error codes without disassembling the control panel (the codes are on another display that covered by the front panel). After doing so I found the error code to be F2, E3 which is "Key held down too long, or key shorted". I am ordering a replacement keypad and will report back if this fixes the problem.
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