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Re: "Power 100" comes up, when I start the microwave, which does not heat anything. I need it to just state: "Start", not...
Select power 100 to heat things,
Testimonial: "Unfortunately, selecting "Power 100" did not heat my item. I need to clear "Power 100" from the screen, so that it states "Start" only, then it may work/heat."
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hmmm...well..did you do a power setting? that is what is needed in the sequence just stated..try one of the presets like popcorn, to see if that works.
Anything can be fixed, it all depends on how much it will cost to repair. Sometimes it just pays to buy another microwave oven they have come down in price quite a bit
If the oven is doing everything else properly (light comes on, fan runs, turntable goes around) but there's no heat, you may have a failed magnetron tube (the microwave source). There's also a relay that controls power to the tube that may not be working correctly, or the control circuit board is bad. It's also possible one of the door switches is not working (so the oven thinks the door isn't closed), although this usually keeps the turntable and fan from running.
Microwave oven service is not for do-it-yourselfers. There are potentially deadly voltages present even with power off, and a chance of microwave leakage if repairs aren't done properly. Let a professional give an estimate to repair it, or just replace it if it's under $100. (When I was servicing these things it wasn't unusual for a repair to cost over half the price of a new one. That's one of the reasons so few shops still work on small appliances.)
When you start the microwave say for 1 minute. Listen closely when you hit start, the light should come on and about a 1/2 second later you should hear a little click and a slight hum. This means the controller is turning on the high voltage transformer and that part of it is working. My guess is that the magnatron is bad. That's the most common problems with all brands of microwaves. The mat on the top should not have caused the problem since the microwave has heat shutdowns in it. I would say that it's a 90% chance it's the magnatron. Most microwaves have a 5 year warranty on that part. Look at your owners manual. Good luck.
Try disconnecting the power line from the microwave ad then reinstalling it after a few minutes.. then try heating up a small cup of water.. allow 1.5 minutes on high power. it should get very hot or boil.. if it doesn't get warm or hot then you may have a bad magnetron ( the tube that produces the microwave energy that causes things to heat up or a bad filament transformer that is required for the magnetron to work.In either case, if it fails to heat anything, I would go back to home depot and insist they send someone out to address the problem. many of their appliances come with a one year warranty but you might want to call the store and ask someone there about normal applaince coverage ( less extended warranty) and what they normally offer. An inquiry costs nothing..
It sounds like it is either the power diode, the high voltage capacitor or the magnetron. If it is the magnetron, it may not be worth fixing as these can cost well over $100.
In order to try to set your mind at ease I will have to explain the Basics on how a Microwave Oven Functions.
When a Microwave Oven is set to COOK ...START. It cooks at 100%. There is no lowering of the heat as with a Range ( Cook Top) Control. So in order to do the other things such as DEFROST, WARM, or anything other than 100% COOK. A COOK ON- COOK OFF system was utilized. To DEFROST, the Microve COOKS at 100% for 30% of the TIME, then IDLES for 70% of the TIME. COOK ON 30% of the TIME, COOK OFF 70% of the TIME = DEFROST This is why you can hear the CYCLE. More power is required during the ON CYCLE, thus the lower vibration. The Vibration occurs when the High Voltage Transformer is turned ON ( COOK ON).
The VIBRATION seems to have got louder with age. This is somewhat normal as there is a vibration from the High Voltage Transformer present every time the Microwave is used. screws and other metal parts seem to get loose with this vibration. There is no solution, unless you can tighten EVERY screw, nut, and bolt in the unit.
Sorry!
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