Question about Microwave Ovens
The loud buzzing you hear is the sound of the magnatron tube.That is what emits the microwave radiation and buzzing should be normal. The mag tube may be nearing its end at witch time you will hear no buzzing and hence no heating of foods. Replacement can be costly depending on the model so most people just opt for a new one. Hope this helps
Posted on Jul 30, 2009
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Posted on Jan 02, 2017
Tips for a great answer:
Feb 03, 2016 | Whirlpool Accuwave Microwave Oven
Oct 10, 2012 | GE Microwave Ovens
Dec 07, 2010 | Whirlpool GH4155XP Microwave Oven
Dec 06, 2010 | GE Spacemaker JVM1640SJ Microwave Oven
Investigate these three areas if your microwave won't heat but you hear a loud buzzing or humming noise:
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 defective.
Nov 09, 2010 | GE Spacemaker JVM1640SJ Microwave Oven
Nov 21, 2009 | Sharp R-1850A Convection/Microwave Oven
Mar 06, 2009 | GE Spacemaker JVM1640SJ Microwave Oven
Feb 24, 2007 | GE JVM1441 Microwave Oven
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