Tip & How-To about GE JVM1850SMSS Microwave Oven

DANGER WARNING! Potential Hazard if your microwave was working and now doesn't heat

If you have this model microwave and it was working fine, then one day it stopped heating items placed inside there are a handful of different issues that could be the problem. In my case it was intermittent, over a period of a few days it would sometimes work (heat) and sometimes not. NO MATTER if this is what your's is doing or if it stopped heating all together. If you decide to let it dry out, or not use it for a while to see if it was a one time occurrence, or whatever the reason, the first time you put something in and probably for the next 10 times at least (this assumes it starts to work again), make sure you are right there with it while it is cooking. Don't assume you can put something in, go do something and come back when the timer is beeping. There is a chance (as this happened to me) that your food inside will CATCH FIRE! Normal food item placed inside, no metal, nothing different than the numerous times before when this had been cooked but when we smelled smoke we came running. Fortunately it started and finished inside the microwave but that's not a guarantee, it could spread. Play it safe. Never had a problem like this before and never heard of a microwave cooking something until it caught on fire (especially since the time entered for the cook was 30 seconds) but it did.

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magic chef microwave just stopped heating, can you tell where the fuse is so i can check it, and i am open for any suggestions. model # hdm111ow


Sounds like the magnetron has failed, if it were the power supply or capacitor or fuse, it would have failed to heat straight away, not faded out. Probably more economic to replace the machine.

Feb 22, 2017 | Magic Chef Microwave Ovens

1 Answer

How come my microwave stopped working?


Seems this is only a coincidence and there is no possibility that items on top of the microwave could have caused this malfunctioning.

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 the switch contact are not good then it will not trigger the processor to switch on the waveguides. If the lights or fan work without any display or action of program being triggered to start then it can be a possible fault on the main board or the processor. Sometimes insect secretion can short the board and display panel and so the processor can work in such an erratic manner. If so clean, solder and reset the board. Now identify the parts by clicking this link: http://www.espares.co.uk/advice/microwave/a/5/141/identifying-microwave-parts.html

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. Check this link to know how a microwave works:

http://www.espares.co.uk/advice/microwave/a/5/1443/how-a-microwave-oven-works.html

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. Check the wave guide covers, if food had deposited
then it must be checked or replaced. See link:
http://www.espares.co.uk/advice/microwave/a/5/1146/how-to-replace-a-microwave-guide-cover.html

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.
If there is heating without any issues, you can use the microwave safely

Jan 21, 2013 | Hamilton Beach Microwave Ovens

1 Answer

My dcs mo-24-Ss microwave oven cannot heat the food after turn on, everything working fine other than no microwave come out


Assuming the turntable, inside light, and internal cooling fan all work when you press "Start" to cook, then I would suspect a bad magnetron, or a bad connection at the "FA" terminal of the magnetron.

If one or more of those three items do not work when you hit "Start", the I would suspect a bad door switch or mount.

The DCS MO24SS is essentially a rebranded Sharp R-530E-series microwave with different cosmetics and a higher price.

The service manual for the Sharp model is here.

The internal Sharp parts in the manual will interchange, but not the external cosmetic parts.

You can order Sharp parts from Encompass here.

Nov 22, 2012 | DCS MO-24-SS Microwave Oven

1 Answer

Model J VM1650BB1 Microwave will not heat anymore. Was working fine the day before. All other items working...light, turntable and fan. What is the problem and how can I fix it?


The model is GE JVM1650BB1. After searching information on the internet, it is almost 100% the Magnatron that has stopped working. Unless I can get GE to give me the part for free and try my hand at replacing it, it does not make sense to pay to have it fixed. Whether GE or another serviceman comes to fix it, it will cost as much as a new one. For this unit, the Magnatron is over $100 from what I can tell.

If you have another suggestion, I'd like to hear it. Seems like GE and perhaps other brands have planned obsolescence with the Magnatron part. Amazing how there is no recall on this part and the consumer groups do not go after this. Good thing our airplanes don't have parts like this that can break in months or years.

Jan 11, 2010 | GE Spacemaker JVM1640SJ Microwave Oven

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