Question about Maytag MMV4205 Microwave Oven
A capacitor generally causes the buzzing sound. Look for the buzzing part or a buldging top on a capacitor
Posted on Aug 20, 2010
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Posted on Jan 02, 2017
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Aug 24, 2013 | LG LMV1630ST Microwave Oven
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
Oct 01, 2012 | Microwave Ovens
Dec 20, 2011 | Microwave Ovens
The magnetron may have either failed or
is not being supplied with the extremely high voltage required to run
Make sure the !!!!capacitor is discharged!!!!! before attempting any sort of repair.
Check the door interlock switches first then the high voltage diode with either an AVO model 8 on high resistance range for short circuit, the feed fuse on the primary of the high voltage transformer and then finally, the magnetron is best checked by substitution.
Hope that helps.
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