GE microwave everything works but no heat has buzzing sound

Microwave Repair
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1

My microwave doesn’t put out any heat, everything works but no heat. I also have a buzzing sound when you start this thing up. Any help will be greatly appreciated.

3

Remove the outer case, [diagram](http://www.gallawa.com/microtech/cap_test.html"]DISCHARGE THE CAPACITOR[/URL] and check the high voltage diode (#1439 on the [B]) as described in one of our previous posts: [URL]http://forum.appliancepartspros.com/microwave-repair/19868-diode-testing.html

Here are the breakdown diagrams and http://www.appliancepartspros.com/partsearch/model.aspx?model_id=212941

Gene.

4

Not sure you will get a reply from the OP as that post is from 11 yrs ago.

I am not a knowledgeable repair person so take the following as just an opinion - To me for the air to pulsate the blower fan would have to be changing speed either due to the voltage varying to the motor or the fan slipping on the drive shaft. On my drying the drive shaft is D shaped and the slipping happens due to the fan being cracked where it slips over the shaft.