Question about Whirlpool Microwave Ovens
This is classic door safety interlock switch failure. Remove the cover and check the micro switches you will find near the latch. If they are failed, the oven can't tell if the door is closed ... door not closed, the oven will not turn on the heat.
If the switches check out ... it could be the capacitor ... you can't and shouldn't test this beyond removing and reinstalling the leads. The capacitor stores a LOT of power and can be lethal. Shorting the device out can be dangerous. Proceed at your own risk.
Posted on Oct 06, 2010
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Posted on Jan 02, 2017
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Jun 17, 2013 | Microwave Ovens
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Oct 02, 2012 | Sharp Microwave Ovens
A diode is an electronic component that
readily passes current in one direction only and blocks the flow of
current in the opposing direction. If your microwave's diode has become
defective, your microwave will not heat and you will hear a buzzing
noise. Test the diode to determine if this is the cause of your problem.
Replace it if it is defective.
A capacitor is an electrical device
which stores electricity. A defective capacitor may be why your
microwave is not heating but you are hearing a buzzing or humming noise.
The capacitor will have to be tested to determine if this is the cause
of your problem. A defective capacitor will have to be replaced before
your microwave will work again. Make sure you discharge the capacitor before you test it, though.
A defective magnetron is the third
possible cause of why your microwave is not heating, but you can hear a
buzzing noise. Test your microwave's magnetron. Replace it if it is
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Sep 27, 2012 | Microwave Ovens
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.
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.
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
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