Question about Sharp Microwave Ovens
If the turntable runs when you try to cook with the microwave portion, then the problem is either a bad relay on the control board (RY2, primary interlock relay) or something wrong in the high voltage section.
If a high voltage problem, it may be as simple as a loose connection on the magnetron terminal or a bad high voltage rectifier diode or as costly as a high voltage transformer or magnetron.
Most of the time the magnetron will have a 5-9 year warranty, and you would only have to pay labor charges to have it fixed. If you take it to the shop yourself, you can save quite a bit.
Here are some links you or someone you know can use for test help, but read their safety warnings first:
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Posted on Jul 01, 2008
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Posted on Jan 02, 2017
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