Question about Microwave Ovens

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MICROWAVE WILL RUN THEN TURN TABLE WILL STOP LIGHT GOES OUT AND STOPS HEATING THEN WILL TURN BACK ON AND OFF. ANY SUGGESTIONS

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  • 45 Answers

Sounds like either an intermittent door interlock switch or possibly a bad thermal fuse.

Posted on Nov 26, 2014

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Posted on Jan 02, 2017

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MicrowaveSvc
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SOURCE: Microwave works with the door open

The top door switch is almost certainly defective or loose. Most likely the latter, and possibly due to a loose or broken mount. Chances are that only the fan and light are on, but it's not wise to take chances with microwave energy, whuch can cause burns and fire. One way to possibly test this theory is to pull up gently on the door and see if it stops doing it. But that's not a foolproof test. A broken or loose mount can be caused by inadequate plastic or improper assembly techniques during manufacturing, by slamming the door, or other physical damage. Bad door switches are usually caused by opening the door while it's cooking instead of hitting the STOP KEY first. I have a helpful text file on door switches with safety tips that will help you. You can find it by searching on Yahoo.com (not Google) for microwave safety.txt Good luck and be safe!

Posted on Nov 11, 2006

  • 2 Answers

SOURCE: Emerson Microwave (mw8992rd) not heating up

I have replaced the main fuse on this model. Though blown main fuses are common in this model, it will not even turn on when they blow, so your problem is most likely NOT a blown fuse. I had heard of your problem so, when replacing the main fuse inside one, I looked for additional fuses and saw none. The store was wrong. Even if it were a fuse, the security Torx screws mean that you couldn't replace the fuse anyway.

This microwave seems to have been haphazarly been recommended by Consumer Reports, but it is terribly unreliable. The turntables break when popping popcorn, the main fuse repeatedly blows, and they also stop heating.

Posted on Feb 23, 2009

  • 2 Answers

SOURCE: Our microwave suddenly stopped heating. The

sounds like the magnatron went out

Posted on Nov 29, 2009

  • 670 Answers

SOURCE: Bosch Microwave HMT8625 range - Microwave not working

Sounds like the magnetron has failed. There are some high voltage circuits that feed the magnetron and you can potentially get hurt if you don't know what you are doing. Would recommend you have it serviced by a professional if you want it fixed, otherwise look for a new one since the cost of repair can come close to the price of a new microwave oven.

Posted on Dec 24, 2009

  • 1 Answer

SOURCE: GE turn table microwave stopped warming food

my microwave 1640GB from GE suddenly cannot heat food and make some noisy sound. as it is mounting in the closet, it is not easy to replace. any solutions or suggestion

Posted on Jan 20, 2010

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1 Answer

MICROWAVE WILL START THEN TURN TABLE STOPS LIGHT GOES OUT AND STOPS HEATING THEN COMES ON AND OFF ANY SUGGESTIONS


Check the door switches. If they are good check the thermal cutouts. Check the connections on the control board.

Nov 12, 2014 | LG Over-the-Range Microwave

2 Answers

I select High/Med/Low, set time say 1 - 2 mins microwave starts up light comes on, fan comes on, table turns...but after 20-30secs table stops, light goes off, disply reverts to clock time, fan runs for...


If there is no heating please do not switch on unless you have confirmed the fault. It is possible that the Magnetron is faulty, the temperature cut off is faulty or the main capacitor is short. It is also quite possible that insect can get into the oven and create soft spots. When you switch on these will create a short and make the voltage jump and in the long run damage the magnetron.
So Remove cover after disconnecting , check for dirt/moisture in the cabin, if so wipe clean and dry, check the magnetron and area clean and use an jet air to clean off.
Make sure that the program controller is working if not check power - step down supply, the pads are responding- if not faulty pads- or the door switches, if contact is not through the microwave will not work.

Now keeping clear of the microwave, switch on, use a cup of water inside to test.
If you notice any sparks shut off as the magnetron or the main HT capacitor can be faulty. replace with same type. In this case it seems that the program controller board has errors specially if the oven heats and shuts off. remove the board, clean and reset.
If there is heating without any issues, you can use the microwave safely

May 16, 2011 | Microwave Ovens

1 Answer

It started by it self,and i had to unplug it to stop


if it was actually heating the pc board is bad, if just the fan, turn table and light its a switch

Feb 05, 2010 | GE Spacemaker JVM1540 Microwave Oven

1 Answer

When trying to run the microwave the light will turn on and the countdown timer will run as well but the microwave will not cook and the turn table will not work either. Any suggestions?


What brand and model is it?If it's a Frigidaire it's a common problem,bottom door switch is bad.you have to remove the control panel to get to it

Sep 22, 2009 | Microwave Ovens

1 Answer

If we close the mircowave door the units start to run by itself. - it will not heat, but the light comes on and the turntable rotates it will not stop until we turn the power off - when power is turned...


i think you have a welded controller, either a digital one or a mechanical one. microwave won't run unless you switch it to run. the door switches are safety switches to turn off the microwave once you open the door. if you have a digital controller, you could have a welded relay, if you have a mechanical timer, it could be a welded contact at the timer. another thing is that it should heat what ever you are heating. if it is not heating, check if it has a fuse and if it is busted. some fuse are installed to protect only the magnetron that is why the light and turn table are still running. if there is no fuse to the magnetron, then check the diode from the capacitor to the ground. it could be open. if not then you can have a bad magnetron. i hope i was able to help.

Jun 24, 2008 | LG Microwave Ovens

1 Answer

Microwave works for a few seconds and then the lights and turn table inside shuts off.


hi the light and turntable work of a common relay located on main pc board.relay probably dry jointed or sticky or check switches behind door catches

Feb 27, 2007 | Maytag MMV5000 Microwave Oven

1 Answer

Microwave works with the door open


The top door switch is almost certainly defective or loose. Most likely the latter, and possibly due to a loose or broken mount. Chances are that only the fan and light are on, but it's not wise to take chances with microwave energy, whuch can cause burns and fire. One way to possibly test this theory is to pull up gently on the door and see if it stops doing it. But that's not a foolproof test. A broken or loose mount can be caused by inadequate plastic or improper assembly techniques during manufacturing, by slamming the door, or other physical damage. Bad door switches are usually caused by opening the door while it's cooking instead of hitting the STOP KEY first. I have a helpful text file on door switches with safety tips that will help you. You can find it by searching on Yahoo.com (not Google) for microwave safety.txt Good luck and be safe!

Nov 11, 2006 | GE JE1640WA/GA Microwave Oven

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