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Microwave is not heating. We have pulled plug several times to attempt to re-set it. This worked twice and now we have no use of our microwave.

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If the microwave sounds like it is working but not heating, it could be a loose wire on the magnetron tube or the high voltage capacitor. if there is an abnormal low pitch hum, it could be a shorted capacitor, diode, or magnetron tube. Either way, diagnosis and repair is best made by a qualified servicer.
There are dangerous voltages present with all microwave ovens,
even when they are unplugged.

Posted on Mar 27, 2008

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Microwave is not heating


Microwaves contain high-voltage parts that can be deadly, even when unplugged, unless handled correctly. Unless you are a qualified expert, don't attempt to get into its inner workings.
Put 1 cup of water in the microwave and set it to heat on full power for 1 minute. Repeat the process with fresh water several times. If the water is not consistently warm, you've confirmed there's a problem.

If your microwave is failing to heat correctly, you may be on a previously programmed setting. Press the STOP/CANCEL button and start the heating process again, but use a higher power setting. This may correct the problem.

Otherwise, there may be an issue with the circuit board and its connections. If a qualified professional determines that the circuit board is defective, the most practical fix may be to buy a new microwave.

Microwaves installed above the range may be affected by steam from cooking. Condensation collecting on the circuitry can interrupt heating. Allow the circuitry to dry out by avoiding stovetop cooking for a few days. If you're still having the same problem, it could be a loose connection in the circuitry or a faulty door safety switch.

A buzzing or humming microwave that emits a faint burning smell could signal a damaged magnetron, high-voltage capacitor or diode. Replacement magnetrons are expensive, so if a service professional determines that's the problem, you may be better off buying a new microwave. Capacitor and diode parts cost much less, but remember, you'll be paying for the expertise to have them installed correctly and safely. It may still make more sense to buy a new microwave, especially if it's a simple countertop model.

For more troubleshooting steps and simple solutions, read Microwave not heating. I hope this helps!

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Sep 28, 2012 | Prestige Appliances Microwave Ovens

1 Answer

My microwave/convection oven will not heat up, but the lights and clock work


Hello

Look to see if the microwave power cord is securely plugged into a live power outlet. The power cord cannot be loose for proper function. Move other appliances to a separate outlet if possible.

Replace or reset the circuit breaker or fuse if blown or tripped.

Unplug the microwave and wait several seconds before plugging it back in to reset.

Make sure there are no current functions in use. Press "Clear/Off" to cancel any other settings or programs already in progress.


Select a new cooking program and then select "Cook Time." Make a time selection and press the "Start/Pause" pad to begin cooking.

Oct 04, 2011 | Microwave Ovens

1 Answer

When you put something in microwave and push for time it will run for about 5 seconds and fan will change tone and it won't heat anything


HELLO.

TO MAKE YOUR MICROWAVE WORK AS REQUIRED BY YOU.TAKE THE RESET STEP

4 Perform a hard reset. Pull the plug out of the wall power supply, and wait a moment. Plug the GE microwave back into the wall power supply to reset any anomalies with the microwave's memory. You will need to reset the time of day if you perform a hard reset.
5 Reset the time of day. Press the "Clock" button, and turn the dial to set the hours. Press the dial to enter. Follow the same procedure for the minutes and a.m. or p.m. Press the "Start" button to start the clock.

Thanks.

Sep 07, 2011 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

I have a Sunbeam Microwave Oven SMW777 - 120V-60Hz. It stopped working two weeks ago - - I can set the time for the clock function but it will not cook/heat anything - won't allow me to set a time to cook...


In all likelihood the mangnetron has failed, or perhaps even the Power Supply. You need to have it serviced by a reputable service centre/man.
Ensure you get a firm "Quote" before proceeding, and remember these days the cost of repair can equal or exceed the price of a new one.

Jan 25, 2010 | Sunbeam SMW777 Microwave Oven

1 Answer

GE spacemaker microwave does not heat food; fine otherwise.


Most likely the hi volt energy components. Usually the hi volt diode or hi volt capacitor. There is hi energy stores here so be careful or do not attempt it. A person skilled in electronics, tv repair, or microwaves can handle it . It is usually worth repairing. The other parts that could be the problem are the magnatron or the hi volt transformer; if so, you might think twice before repair (the price will be higher).Goodluck, Macgivor

Jan 16, 2010 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

Microwave heats intermittently


Doug, not not attempt repairs on your m/wave unless you have had training.
When you take off the cover even with the plug turned off, their is still charge inside the m/wave which could kill you!
sounds like the magnetron may be faulty, get your approved engineers to carry out a' power check' on the magnetron etc,

Sep 28, 2009 | Panasonic Microwave Ovens

1 Answer

GE Advantium Microwave section doesn't work.


The primary interlock switch on my Advantium has failed twice. The replacement part is available at: appliancepartspros.com part no. for my Advantium was AP2622452 and it cost $11.74 + $6.95 shipping.

For what it's worth, my nylon connector and wire covering were also scorched a bit but the last primary interlock switch lasted me for over a year.

Please note that I am not an expert at repairing appliances and that I assume no responsibility or liability for any attempt you may make to repair your own appliance.

May 30, 2009 | GE Advantium SCA2000B Microwave Oven

2 Answers

KENMORE MICROWAVE (HOUSEHOLD) LOCKED


It sounds like you press STOP two or three times to lock it. Maybe that (or another key) will unlock it.

The lock / unlock procedure will be covered in your owner's manual.

Or you can try a hard reset - unplug it from the wall for one minute, then plug it back in and try again.

If you don't have your manual, you can get one here. (Enter your model number without any spaces)

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

Jun 24, 2008 | Kenmore 62622 Microwave Oven

1 Answer

Microwave not heating up


that has happened to me twice, the only thing that you can try is to change the setting to make sure that its not on DEFROST setting, and if this is fine, they I recommend U to get a new Microwave. :)

Feb 10, 2008 | Microwave Ovens

2 Answers

Maytag Over the oven microwave


is the turntable working

Dec 29, 2007 | Microwave Ovens

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