Question about Makita 9005B 5" Electric Angle Grinder

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Can't get grinder to turn on. Checked brushes, cord, trigger/switch. Any suggestions?

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  • taryna Feb 26, 2009

    Yes I had, I talked to Makita themselves and they said it is probably the armature which can burn out if they used too high of voltage in the cord.


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Did you check continuity to the field/brush holders. They have a garter spring that sometimes became overheated and broke. It seems like you have done everything else. Let me know

Posted on Feb 25, 2009

  • David Ford
    David Ford Feb 26, 2009

    I would still look at the continuity to the brush holders. That armature is pretty durable.


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First thing to check is the brushes. They should be long enough and the springs should be strong enough to push the brushes firmly down on the armature. If not replace them. Next, check outlet with another tool; if no power fix outlet issue or use another outlet. If you have power at the outlet, plug in grinder and check voltage where cord goes in the grinder switch. If no power, replace the cord. If you have power coming in, check for power on out side of the switch with the switch on. If you don't have power replace the switch. If you have power out of the switch and the brushes are OK, you may have continuity problems in the field or armature. If you have the equipment to check them do so and replace what's damaged. If not I'd just replace the grinder, if you need an armature and/or field you would be better off with a new grinder.

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1 Answer

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best regards savumihai71

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