Question about GE JVM2050 Microwave Oven

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GE Mircowave JES2251SJ -

After operating for about 10 minutes the unit stops heating. It gets very hot. After cooling off it will operate normal for another 10 minutes.
Is there a cooling fan and where is it located?

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  • GE Master
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The internal magnetron cooling fan is located behind the control panel assembly.

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.

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 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 Dec 02, 2008

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The cook relay on your control board is shorted, and the unit is cooking whenever you close the door.

When the magnetron overheats, its thermostat opens, shutting power down until the unit cools to a safe level, then power is restored.

I regularly repair these with my $54.95 service, which includes insured return shipping.

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<--- I'm happy to help you. Yes, it's overheating and the magnetron's thermostat is opening to protect the magnetron until it cools, then it turns power back on.

It could be due to a failed or unpowered cooling fan motor. Have your cooktop lights gone out recently?

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If it's not set to recirculate, then the grease filter may just need to be washed.

Or your ductwork may be blocked by an animal nest or debris. The entire duct and the outside vent / flap must be clear.

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

You can find helpful exploded view diagrams and order parts by entering your full model number from the tag on the oven here.

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If for some reason you don't have your owner's manual, you can still download it free here.

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

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Hi there!
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Timed Power Loss


It sounds like your magnetron is failing, but generally, the most common causes of a failure to heat are:

- bad door switches or door switch mounts
- loose connection at the magnetron
- problem or loose connection on the control unit circuit board
- bad magnetron or other high voltage part (such as a shorted diode)

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

There should also be a "mini-manual" hidden inside the unit behind the control panel, which is very helpful when troubleshooting.

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

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