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Model: 66560629000 Brand: Kenmore Age: 5 - 10 years
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Mpa49g  
#1 Posted : Tuesday, September 2, 2008 10:26:00 AM(UTC)
Mpa49g

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My over the range microwave comes on, but doesn't heat. and makes a loud vibrating noice that can actually be felt in the control panel.
Any suggestions?:confused:
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Gene  
#2 Posted : Wednesday, September 3, 2008 12:30:23 PM(UTC)
Gene

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Most likely the problem is a shorted out diode (aka rectifier). Open the control panel and check the diode for continuity.

- The part number for the diode is AP3774817

Gene.
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