Question about Sharp R-963 Convection/Microwave Oven
The table is turning and I hear the fan noise but no magnetron buzz. Could this have to do with the doors contact switchs ? There is a loose in the door and if I pull the door up the table stops but restart when the door is relased but no magnetron buzz and no heat.
Yes, it is either a bad door switch or a loose or misaligned door switch holder.
If you or someone you know decide to look into it, we have critical safety information, info on door switch diagnosis and replacement, and disassembly information at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk
We're happy to help and we appreciate your thoughtful rating of our answer.
Posted on Jun 23, 2008
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Oct 10, 2012 | GE Microwave Ovens
Mar 06, 2011 | Viking VMOS200 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.
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Could you describe the noise?
It may be a noisy fan motor or a failing magnetron or high-voltage transformer.
If you or a friend decide to look into it, we have critical information on safety, disassembly and door switches at our site, linked here on Fixya: http://tinyurl.com/yzjozk
You can usually find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383
Oct 13, 2007 | Microwave Ovens
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