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I have an over the range microwave, and it suddenly stopped heating. Also, makes a loud noise when you turn it on.

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It sounds like the High Voltage diode (1) is shorted but it could be the magnetron (2) or the HV capacitor (3). - 1 side shorted to ground. A dead short will blow the fuse and kill the unit.

Posted on Sep 11, 2009

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