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Sharp microwave oven works (lights, turntable etc) but doesn't heat.

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First you need to make sure that all "normally open" door switches are closing when you close the door. Next would be the diode. That is a little black thing that runs from one of the capacitor terminals to the chassis. You should have continuity one way, but NO continuity when you reverse test it. It is like an electrical check valve so to speak. If that shows open both ways, or continuity both ways, replace it and you should have fixed your microwave oven. Of course there are a lot of other ways your oven does not work. Get back to me if you need more help.

Posted on May 27, 2011

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Try to replace magnetron and diode usualy that's the most problem of microwave hope that works

Posted on May 27, 2011

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It's a door switch that's bad. Probably the secondary interlock switch. You need an ohm meter to verify switch not 'making' electrically. Usually the only thing that causes this switch to fail is from opening the door when the microwave is cooking, secondly, by cooking at very extended lengths of time.

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

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HI..there is a heating filament of an oven MAGNETRON..it s responsible of producing heat to the oven..possibly this is defective ..this filament must be replaced by a new one..theres no problem with the motor cos it runs the table power and light button seems working..HOPE THIS HELPS

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Regarding parts, contact the seller here to purchase parts.

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