Question about Sharp R-1601 Microwave Oven

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My microwave runs but does not heat - Sharp R-1601 Microwave Oven

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The service manual is here:
http://www.microwavedisplay.com/r1600_r1601_r1602_sm.pdf

If when you try to cook the oven lamp comes on, but fan and turntable do not, then you have a bad bottom door switch or mount, and you should see these files:

http://207.234.249.73/mwd/safety.txt
http://207.234.249.73/mwd/disassembly.txt
http://207.234.249.73/mwd/doorsw.txt

Any unusual noises? Is it louder or quieter than usual?

We have a sound clip of what a microwave should sound like when the cooling fan and high voltage section are operating here: http://www.microwavedisplay.com


A loud buzz, hum, or groan is usually a shorted high voltage rectifier diode, but a sound like gurgling into an empty coffee mug is one symptom of a failed magnetron, and yet the mag can be bad without that sound.


Here are some links you or someone you know can use (in order given) for test help, but read the safety warnings first:

http://www.gallawa.com/microtech/diode.html
(if it is NOT shorted or burned looking, it's probably fine)


http://www.gallawa.com/microtech/mag_test.html
(continuity can be good even though mag is bad!)



You can order parts for this brand from Encompass or you can call them toll-free at 866-779-5835.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

Posted on Sep 08, 2010

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