Question about GE Spacemaker JVM1640SJ Microwave Oven

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Works up to about 5 min. then waits about 20 min. to cook again. HELP

It works for 2-5 minutes and then it just shuts off and wont come back on for 10-30 minutes. whats wrong?

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When you say shuts off, do you mean it goes dead as if someone unplugged it, or does it stop as if someone hit the Stop pad?

If it is going dead, it sounds like the magnetron is overheating and opening the thermostat.

This can be caused when the internal cooling fan is not running or by a magnetron that is failing.

When I say internal cooling fan, I do not mean the hood vent exhaust fan which you can turn on and off manually.

I'm instead talking about the internal fan which comes on automatically whenever you microwave.

It is vital that the cooling fan runs, or the magnetron will be destroyed.

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.

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 28, 2008

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I had picked up a very nice stainless steel covered microwave at a yard sale for 5 bucks. They had told me it worked fine but they neglected to tell me it only worked fine for 4 minutes and then it would shut its self down and then you had to wait 3 minutes for the reset to take effect and then you had another 4 minutes of cooking.

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I decided to just take the back cover off and have a look for my self.
once I was inside i was touching this and poking that and noticed it was really dusty inside with plenty of left over spider homes so i used my computer air can spray and clean it all out.
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Something was wrong and I couldn't quit place it so I tried it again after the relay clicked back on. Then I saw it. The cooling fan was not turning.
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I then plugged it back in and set the timer to 5 minutes. By the way never touch anything inside one of these while it is plugged in.
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The best bet is to slightly rough up the contact area of the shaft with sandpaper and use a little super glue to hold the blade assembly on the shaft, and let it set a few minutes before using it.

I always recommend that you use the hood vent exhaust fan when cooking on the stove top to keep heat, steam, and grease out of the controls.

There should 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.

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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 from the tag on the oven here.

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

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

William E. Miller, AS-EET
prototech@usa.net
http://www.microwavedisplay.com

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Help please


Are you saying that it will stop cooking after 59 seconds, but it will resume cooking if you press Start again?

(If not, please reply back and clarify)

If so, this is a problem in one of the damper-related components, most likely the switch, but it may also be the motor or the damper door.

The damper is a door inside that opens or closes depending on cooking mode. If the controller senses that the door is not in the right position, it will shut down the cook cycle.

Sharp models stop after 59 seconds.

See the attached sample photo for a typical damper assembly.

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

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Aug 04, 2008 | Microwave Ovens

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