I have a compound miter saw that won't run at all. I've made sure it's plugged into a good, working outlet and I've checked to make sure nothing is jammed against or obstructing the blade. Other than that I don't know what to check or how to troubleshoot the issue.
Can someone help me? I'd be so grateful.
Thank you in advance
crwdns2934109:0crwdne2934109:0
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If you don't have any electrical trouble shooting this could be difficult.
First check the power cord for visible damage. If it looks good, Plug in the saw, pull the trigger and wiggle the power cord where it enters the saw. The insulation may look good but the conductors may be broken inside the insulation where the wire typically bends. If the saw tries to run you found your problem. Replace the power cord.
Next check the brushes. If the saw has little use on it then the brushes are likely OK but checking them is not difficult. Unplug the saw. On the motor you will see a circular part, one on each side of the motor near the end. They will have a slot and are usually black. Use a straight blade screwdriver and turn them counter clockwise to remove. The carbon part must not be worn out and the wire and spring should be intact and in good condition. If these look OK then reinstall in the same orientation as removed.
The next thing to check would be the switch. Make sure the saw is unplugged. You will have to disassemble the handle to get to the switch. Disconnect the wires and test the switch for continuity. The easiest way is to use a multimeter. If you don't have one, use a flashlight bulb and a battery. Make a circuit from the battery to the switch, the other side of the switch to the bulb and from the bulb to the other side of the battery. With the switch at rest the bulb will be off. Pull the trigger and the bulb should light.
While you have the saw handle disassembled, use the same technique you used to check the switch to also check the power cable. Each wire should have continuity continuously.
If none of these checks finds the problem then you need to take the saw in for repair or just buy a new one.
crwdns2934105:0crwdne2934105:0
Thanks you so much for these tips. I'll be checking it out in the next couple days when I get the time. The cord does look good, but I hadn't thought of the possibility that the wires inside would be damaged.
I do have a multimeter, so I should also be able to check out that switch as well.
Again, I thank you taking the time to get me pointed in the right direction.
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