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Re: Microwave will not heat
Test the high voltage capacitor,
the rectifier diode.or the magnetron.
If it additionally does not spin and no light, then check also the door switch.
The diode and capacitors can br tested. The capacitor must be allowed
discharge before testing, or you risk to get electrocuted, even if
power is off. Capacitors can get discharged by shorting their two
Replace the magnetron if the checks and all of the high voltage component tests are good, but the unit still does not heat.
All locations, and description of this parts can be located using the diagram here: Counter top.
Parts must be tested to find out what is wrong.
Remember that microwaves are potentially dangerous devices if not repaired properly, the job must be done by a competent person.
A microwave energy leakage test must always be performed when the oven is serviced for any reason.
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A Microwave Oven works by heating water/moisture in food: if the boiling action (e.g. when boiling water) is greater than the oven exhaust fan can cope with, then the inside will steam up and fog the door glass: this is usually OK and 'normal' (this is actual the advise in cleaning up the interior of a microwave oven - steamy soapy water - see your manual).
The power supply to the microwave unit has burned out. This unit normally is under warranty for seven years. The real problem is that unless you take the unit into a authorized repair place it will cost you almost as much as you paid for the microwave when you purchased the unit to have a repair company to come out to your home to fix your Microwave .This happened to me and I just purchased a new microwave and got rid of the old one. If you can find a authorized repair shop , stake it in before you purchase a new one. Sorry I could not help not even for myself. .
Hi, this is common in most microwaves. this abnormal noise is coming from a faulty Magnetron. this device is responsible for the heating process and, it is damaged and not heating at all at this point.Simply replace the Magnetron and, this unit will start to heat once more.
HI, you will need to replace the heating device. This device is called the Magnetron and, it will cost you about $133.00. This is a repairable issue but, you will need to call for service. I do not recommend installing this device if you are not familiar with handling this type of tech.
Unfortunately, there is no way to tell which part the microwave needs without opening it up for examination. There are a few parts that, if defective, would prevent the oven from heating.
a high voltage transformer which passes energy to the magnetron
a magnetron which converts high-voltage electric energy to microwave radiation
a magnetron control circuit (usually with a microcontroller)
This is NOT a repair that you would want to attempt yourself. The labor for the repair would cost a minimum of $50 and shouldn't exceed $100. You'll also have to pay for the necessary part if it's still available from the manufacture or their parts distributor.
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..