My makita 9227c stopped working, Im trying to find a test procedure to determine if it is the switch or controller. is any thing like this available.
Hi, Unfortunately there is no external test, It has to be opened and troubleshot with a multimeter. Especially something with a variable speed controller, power cord, brushes, switches, ect. It could be several things. If you are technical enough to take it apart let us know we will try to help. Good Luck to you!
Hi, OK good, start with the obvious stuff first , check the brushes are not worn down to nothing, check that the spindle lock is free, ring the power cord and then you can check the switch and controller. The switch is connected to the controller with a ribbon type cable but with your meter you can still check the switch by moving the trigger and measuring the outputs. Since its variable it works like a strained gauge, it changes the resistance. That ought to get you in the right direction, let me know how it is going.
Hi, Ok this is a first version so the switch is checked thru the field windings. Remove the brushes and check the windings first to make sure they are not open. Then measure resistance from one of the power cord leads to one of the brush housings and get a reading, pull the trigger it should change. If it doesn't it is the switch. Good Luck, hope this Fixsya! Let me know!
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I do know how to dissasemble it and use a multi meter.
brushes still have about 1/2" before the wear line, the spindle turns free, the power cord is bringing powwerr to the switch but it is not a ribbon wire from the controller there is the hot and neutral from the cord a paif of about 20ga orange a red, yellow, blue and white also about 20 ga. these are all conected to the switch.
My 9227C buffer recently stopped working also. I replaced the switch and brushes but still nothing. If you tap the head it tries to spin half a revolution or so then stops. Any ideas on what it could be?
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