Question about Bosch 4000 - 07 Electric Table Saws
The speed control on your table saw works by sensing what's going on in the field. If you replaced the speed control circuit board and the motor still runs out of control, the next item to replace is the field.
Posted on Feb 10, 2012
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Posted on Jan 02, 2017
SOURCE: Bosch 4000 table saw won't work
OK sounds like you are handy. You have electric to the brush tubes? (first unplug saw to test) If yes then I would remove the brushes to see if they were making contact with the commutator. Does the blade spin freely? If not you might have a bearing problem. I would again use air after removing the brushes and then reinsert making sure they seat on the armature. If still nothing then if you are comfortable I would pull the motor housing. But before pulling go to Bosch Tools website and downloading a breakdown of your saw. Let me know if I can help
Posted on Jan 15, 2009
If you are mechanically inclined and it sounds that way do you have a volt ohms meter?? If so start at the cord and check the continuity to the brush holders. Why did you replace the field? You might have had a stuck brush or some other problem. Make sure the brushes move freely in the tubes and also look for discoloration on the commutator of the armature. Let me know what you find and I will try and help you thru the rest of it.
Posted on Aug 25, 2009
Weakness of this saw is sawdust and debri entering the cooling ports of the motor causing intermittent contact of brushes which damages the motor speed control board ($40.00). Don't ever operate this saw with out a vacuum saw dust extraction system. Also when you replace the Speed control board also replace the Brushes ($6.00).
You can bypass the speed control board (if you want to disable this wonderful engineering feature by attaching black and white power wires directly to the black and white wires to motor.
Blow motor out regularly with compressed air !!
Posted on Aug 25, 2010
SOURCE: bosch 4000 10" table saw
this saw does not have a breaker overload. Let it cool down and see if works, if not then you have an electrical issue that would need to be diagnosed.
Posted on Jul 12, 2011
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