Question about Kenmore 62702 Microwave Oven

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Microwave made loud popping sound and now does not heat.

I was using my Kenmore above the stove microwave and it made a loud pop, sounded like a gunshot. Now everything seems to be working the same, except it does not heat. Do I need to just replace it?

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Hey,
Try this
Probably a high voltage diode popped because contaminated grease eventually built up and made a path for a high voltsge arc to occur.. To confirm,take the outer cover off the microwave and discharge the high voltage capacitor by shorting its terminals. Then pull the plug off the magnetron side and place it near the magnetron socket. Now turn the microwave on and push the connector on the magnetron with a chopstick or a long insulated screwdriver. If no arc when you do this this confirms a bad diode.



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Posted on Apr 13, 2009

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1 Answer

Is it time to replace the microwave if it makes a loud vibrating sound followed by a pop which is followed by the sound of broken glass?


Yes it is time to replace it, the magnetron has failed and there are two more parts of concern, the high voltage capacitor and diode are also a factor. The high voltage capacitor and diode work with the magnetron to produce the high voltage that heats the food. The vibrating sound is further evidence the magnetron is culprit.

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Okay, first we need to separate the situations. You were boiling water on the stove and had the range hood fan running to **** up the steam. Then you put something in the microwave to heat and you heard a pop and then zip-o.

The water on the stove has nothing to do with the situation, the fan you turn on is not part of the microwave, so it has nothing to do with the microwave.

The pop you heard and then the humming suggests the magnetron failed. You said you found a blow fuse and replaced it and still nothing, right? The magnetron is the most likely culprit...I would think it is safe to say that the magnetron shorted and drew enough current to blow the fuse.

Replace the magnetron and if that doesn't work, let me know here. Good Luck!

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YOUR MAGNETRON IS MOST LIKELY BAD. THIS IS THE UNIT THAT CREATES THE MICROWAVES.

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This is almost certainly a blown high voltage diode.

Please reply back with your brand and model number so we can help you.

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