Question about GE Spacemaker JVM1640SJ Microwave Oven
The rag caught on fire . We caught it and cleaned the micro up but now it does not heat. It turns on and runs just does not heat. What can I look for?
If everything is on, like your display lights and if the bulb lights inside the microwave when you close the door and press start, then you probably damaged the magnetron. The magnetron is the part that emits those high frequency microwaves and cooks the food from the inside out. I do not think there are any other damaged components. The reason I say that is that the magnetron through that little cavity or grille you see on the inside of your microwave was the closest thing to the fire and was damaged directly. By unplugging everything you can take the cover off. The magnetron sits behind the control panel but on top. It has cooling fins and two wires that plug into it. It is possible that one or both of those wires got burned. You will just have to look at it and visually inspect the magnetron. To take it off by unscrewing 4 screws and unplugging the two wire terminals that go to it. If there are no burnt wires going to it then your magnetron was damaged providing as I said above that everything else is normal it just doesn't heat anymore. You can get another one at a local electronics supply house or from www.mwoparts.com. Good luck.
Posted on Jan 26, 2009
The magnetron failing is the most likely cause. However, I'd make sure the high voltage rectifier is not shorted, the high voltage filtering/voltage doubling capacitor is not shorted, all 3 transformer windings have continuity, and 120 volts is being supplied to the transformer primary. Keep in mind that 4000 volts, or more, will be on the high voltage components when the unit is running. And, there's enough current to kill you instantly. Be cautious!
Posted on Apr 26, 2014
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