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Kitchenaid Microwave is making a crackeling noise while running and it is not the item being heated up that is producing the noise. I ran the microwave without any item in it and the crackeling noise is still heard. What may be the problem?

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9 times out of 10 this is usually this is a bad magnetron, the other time is sometimes a bad high voltage diode.

Posted on Nov 13, 2008

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Kitchenaid KHMS155LSS 1000 watt microwave makes grinding noise


Chances are you have a bad stirrer motor or the stirrer blade is jamming or loose on the motor shaft.

Your owner's manual should tell you how to remove the stirrer cover to check it.

If for some reason you don't have your owner's manual, you can download it free here, as well as the parts manual for your model.

You can also find helpful exploded view diagrams and order parts by entering your full model number here.

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

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