Question about Bosch 7 - 1/4" Skilsaw Circular Saw

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My bosh 1677m is less than one years use and it started sparking toward the motor and stopped working. It is not the power cord. what else could be the problem??? thank you

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  • dperry3434 Dec 20, 2008

    thank you cleaning the brushes worked

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It might need the brushing replaced, sometimes just adjusting them works, or cleaning them. You could also look at all the solder joints to insure that they are in tact. I've found that the switch is the week point in a lot power tools. You can check the switch by using a multi-meter and ohming it out. With the meter set to the Ohms setting you should read zero Ohms with the switch set to on and a really high number if not a bunch of flashing 8's depending on the meter when set to off.

Posted on Dec 06, 2008

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My craftsman circular saw stopped working could it just be the switch


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1 Answer

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1 Answer

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1 Answer

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You could have a couple of different problems. The first place to start is the cord. A quick and easy test to do is to crimp the cord in your hand while the saw is plugged in and press the trigger. Crimp the cord moving it in your hand from the plug to the handle. If there is a break in the cord you may connect it for a couple of seconds and you will get some power to the saw. This way you can locate the faulty section of the cord. If nothing happens next you should remove the handle cover and switch. Test the cord with a continuity tester to make sure the cord is providing the power. If the cord checks out next move to the switch. There should be 2 wires going into the switch from the cord and 2 wires going out to the motor. Test for continuity through the switch for each pole while depressing trigger and also when trigger is open. If your switch checks out, next check your motor by disconnecting the wires from the switch that go to the motor. You can check continuity between these two wires. If there is continuity nothing is wrong with your motor because it is making a circuit. If you do not have continuity it could be a bad brush a shorted armature or field, or a broken wire. This would require total dis-assembly and further testing. If you need any information please post back. I will check back to see if you require further assistance

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1 Answer

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1 Answer

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