Question about Microwave Ovens
The microwave will not heat and it makes a loud buzzing noise
That is usually a shorted high voltage rectifer diode, but it may be the magnetron.
It would be helpful if you reply back with your brand and model, but here is a good answer that should help you:
You can usually find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383
Here are some links you or someone you know can use for test help, but read their safety warnings first:
We're happy to help and we appreciate your thoughtful rating of our answer.
Posted on Mar 16, 2008
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Feb 03, 2016 | Whirlpool Accuwave Microwave Oven
Sep 12, 2017 | GE Profile Over the RanMicrowave....
Oct 10, 2012 | GE Microwave Ovens
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
Dec 23, 2009 | Sharp R-630D Microwave Oven
Nov 21, 2009 | Sharp R-1850A Convection/Microwave Oven
Jul 30, 2009 | Microwave Ovens
Jan 06, 2009 | Kenmore 62622 Microwave Oven
Mar 03, 2007 | Amana AMV1162 Microwave Oven
204 people viewed this question
Usually answered in minutes!