Question about Microwave Ovens

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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 high-voltage rectifier diode

If you or a friend decide to look into it, we have critical safety information, info on door switch diagnosis and
replacement, and disassembly information at our site, linked here on Fixya:

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

Posted on Nov 05, 2007


My ge spacemaker microwave runs but does not revolve and dont heat food

Posted on May 02, 2008

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1 Answer

GE spacemaker GL1800 runs but does not heat

For that sound it will need atechnician but for not heating you cqn replace fuses

Sep 13, 2014 | GE SpaceMaker Microwave Ovens

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My microwave turns on but no heat and its not spinning

No heat --is a failed front electronic panel or
micro wave gun

No turn table-- is a broken belt under the cabinet

Aug 13, 2014 | Cuisinart CMW-200 Convection/Microwave...

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Micro wave GE space maker 1800 is heating food well but with noise and turntable not moving,,what could be the problem?


Here is a tip that will help you to figure out what is wrong with your Microwave Oven....

Microwave Oven Basic Troubleshooting Tips


Jan 23, 2011 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

Would like to remove control panel on micro wave to get to the fuse on a ge space maker

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

There should 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.

Jul 08, 2010 | GE Microwave Ovens

1 Answer

We have had custom cabinets made for our kitchen and have installed a microwave above the stove and it is to high for my wife, She is 5'4" tall and can hardly see in the micro wave. The carpenter doesn't...

you will also need to consider space between the stove & microwave, but you could go back to your cabinet company and have them make you a dead panel that matches your cabinets for the face side of the microwave. then you will also need three other pieces 1 for each side and 1 for the back! if you want to drop the microwave down 12 inches have your panels cut 12 inches! have your carpenter block in and attach panels, go to a fastner company with 1 of the bolts that the microwave came with to hang it from the cabnit and find or order bolts the compensate for the depth in which you you have your panels built!

May 31, 2009 | Microwave Ovens

1 Answer

Boiling waer under micro wave lots of steam into micro wave, turn on micro wave ,pop noise like glass miro wave comes on louder hum than normal no heat

Q - The microwave display counts down and the inside light is on,  but nothing is heating and the fan is not running.
A - This most commonly is a bad door switch, other possible problems are a faulty relay or solder joint on the power module, but a bad door switch is most common.
 Q - My microwave is running and sounds like it is working but will not heat up anything.
A - Many thing can do this but, common things are....loose high voltage wire.....poor solder joint on board.....magnetron.....power relay.....
Q - The microwave makes a loud "hum or buzz" noise but will not heat up the food?
A - 9 times out of 10 this is usually this is a bad magnetron, the other time is sometimes a bad high voltage diode. See components section.

Mar 03, 2009 | Amana Radarange Microwave Oven

1 Answer

No heat from micro-wave

Possible problems with this are: bad tube, bad diode, bad relay on the controller or bad Triac (if no relays) and the capacitor (the large silver one.) If the set runs but doesn't cook... then the door switches aren't the problem nor is the fuse.

Aug 13, 2008 | GE JVM1440 Microwave Oven

1 Answer

I have a JVM1603BJ03 space saver micro wave. The turn table cracked in two, the plastic support device to turn the glass table has desenigrated into several small pieces. It appears the micro wave is...

Do you cook a lot of popcorn?

Do you place your food items in the center of the turntable as opposed to placing them off-center?

Both can cause repeated heating of the same spot on the turntable, which can stress it and allow it to crack.

You can buy replacement parts here.

I suggest that when you cook popcorn, place a paper plate or two upside-down under the bag and always place your food items off-center on the turntable tray.

Once you have the new parts, I would suggest at least a quick heat test. That is to heat one cup of water on high and it should boil in about 2 to 2-1/2 minutes.

If you would like to perform a more standard heat test, please see my Ask Mr. Microwave page.

If your magnetron is indeed running too hot, then it is probably dying. Sometimes - like a star - they can burn hotter right before they die.

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

Jul 04, 2008 | GE Microwave Ovens

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