Question about Makita 14" Die Grinder

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Plug in makita die grinder, turn on, runs for 2 to 3 seconds and pops breaker. It is a variable speed grinder

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  • jamespg Mar 25, 2011

    idiot

  • jamespg Mar 25, 2011

    It is not the circuit. The switch seems fine. The motor is not seized, but, could the motor windings have broken down.

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  • Master
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Does it run freely?as in not seem to be lugging from bad bearings in the motor shaft,then check the speed control board for a shorted triac/scr transistor

Posted on Mar 25, 2011

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  • Master
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Hello jam.... If there are other motors or several lights on this circuit, it will pop the breaker again.

Find an outlet near your electrical panel which does not have other motors plugged in to that circuit and try it there.

At least then you will know if it is the circuit or the actual die grinder. Joe

Posted on Mar 25, 2011

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