Planer: Won't Turn on
The most likely parts for causing your miter saw to not turn on are the switch, carbon brushes, circuit breaker, or key. Read our guide for tips on what you should be looking for to determine the part that needs to be replaced and professional instructions on how to fix it as quickly as possible.
Take a photo of the wire attachments as a reference guide and then disconnect the wires. Examine the circuit breaker for signs of melting and sparking, causing the circuit breaker to overheat. Look for any other signs of breakage or anything else out of the ordinary that could be impacting the performance of the circuit breaker. You can test the circuit breaker using a miltimeter set to an ohmmeter. Place a lead on each terminal on the circuit breaker. In the ON position (button in the down position), you should get a...
Take a photo of the wire attachments as a reference guide and then disconnect the wires. Examine the circuit breaker for signs of melting and sparking, causing the circuit breaker to overheat. Look for any other signs of breakage or anything else out of the ordinary that could be impacting the performance of the circuit breaker. You can test the circuit breaker using a miltimeter set to an ohmmeter. Place a lead on each terminal on the circuit breaker. In the ON position (button in the down position), you should get a reading. In the OFF position (button in the up position), there should be no reading – infinity or O.L. for “out of limits.” If your circuit breaker is not doing this, or doing anything different, replace it. Attach the wires to the new circuit breaker and reassemble the breaker back into the housing. Install the nut to secure the breaker in place. Reinstall the switch.