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I have a J HP60G 002 GE Microwave (older)keeps

I have a J HP60G 002 GE Microwave (older) keeps blowing fuses. This is an over the oven unit (single unit with stove). I have repaired the power supply circuit board before and found a cold solder joint. Repaired with solder. There is something making the fuse blow, like a capacitor. It would be nice to have a schematic.

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  • twotonetool Sep 21, 2009

    Every time. Immediately. No delay. Thanks for asking.

  • twotonetool Sep 21, 2009

    (Do not know if the last reply took)
    Immediately. And every time. Thanks for asking.

  • David Hanks May 11, 2010

    Does the fuse blow immediately, after 3 seconds of turning it on or ....every so often??

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If it blows the line fuse instantly when you push start.... it is either a shorted HV capacitor or shorted monitor switch.... most likely.

Posted on Sep 13, 2009

  • David Hanks Sep 21, 2009

    There is a dead short. Either cap or switch. Before you go digging around in the High Voltage section, be sure to short across the terminals of the High Voltage Capacitor. Next, disconnect one of the leads to the primary side of the High Voltage Transformer (from the control or relay board). You have now removed the complete High Voltage section fron the circuitry. See if it still blows the fuse. It probably won't. If it does, the problem is not in the HV section, it is a switch, fan or stirrer motor or light. If it doesn't blow the fuse, reconnect the transformer primary lead and disconnect the single lead to the High Voltage Capacitor. Try it again. If it doesn't blow the fuse, the Capacitor is shorted. It would be best though to use an ohm meter to check for a short across the capacitor as well as from each terminal of the HV Cap to ground. Still, the magnetron should be checked to ground also.

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