Question about Dewalt Heavy - Duty 12" Double - Bevel Sliding Compound Miter Saw

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The saw is plugged into a good outlet but it will not turn on.

The saw worked perfectly the last time it was used and has been stored in a dry location. Now it will not turn on.

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You must make sure you are plugged into a live circut by testing with other appliance,if ok,then look for kill safty switches that are part of the equipment and dewalt will tell you where once you explain model #.

jj

Posted on Mar 16, 2009

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1 Answer

Saw was left in the rain and now won't turn on.


Lots of tools are not intended to get wet.
The first thing I would do would be to unplug the saw and then use compressed air to THOROUGHLY blow it dry, inside and out.
Letting it sit overnight in a warm room would be a good idea.
There will probably be a reset button (usually red) and I would make sure that it is not in the tripped position by firmly pressing it in.
Then plug the saw in and give it a try.
If it won't run I would unplug it and use a continuity meter to trace the electrical circuits to locate the problem.
Hope this helps you.
Just a friendly hint...............
Take care of your tools and they will last for years.

Apr 16, 2016 | Saws

1 Answer

I was cutting a plywood and pulled the saw back through the cut, before the blade came to a complete stop. Now it will not turn on. Is there a reset switch or a failsafe that tripped when I did that?


Good afternoon Rebecca.

Some of the answer will depend on your make/model. Saws will generally have some failsafes inside to keep them from getting damaged, but lets start with what you have. You say you pulled the blade back through the cut before the blade came to a stop. That was probably OK - you generally don't want to stop the saw in the middle of material since it might pinch or jam against incoming wood.

If there is not motion, the foremost question is whether it's a saw problem or a power problem. To that end (please be careful here - unexpected saw starts can hurt you very badly)
  1. With the saw unplugged, can you move the blade at all? There may be a fair amount of resistance through the worm gear to the motor, but it should move. If it's totally jammed, you may want to try removing the blade and checking for debris jammed in the saw
  2. If the saw is plugged into another outlet that you know has power, will it turn on? If not, focus on the saw, if it works, focus first on the outlet.
  3. Is there power to the outlet? Plug something else that you know works into the outlet and see if it will turn on. If not... check if it's a GFI outlet and try resetting the breaker buton in the middle of the outlet. Then check the breaker panel that serves that plug and see if a breaker tripped. this could be particularly possible if it's a 15 amp circuit and you were, say, cutting a heavy thickness of plywood. Try re-setting the breaker then and see if the outlet turns back to life.
Some saws may have an overheat breaker, which will require you to just let the saw cool for a while. others may have a fuse, but the location will depend on the particulars of the model.

Hoping this helps.
Good Luck!
D

Nov 23, 2015 | Saws

1 Answer

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if the fuel is getting there something to do with the spark. Are all contacts good and clean? check the quality of the spark....see if it is any good.

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1 Answer

Why miter saw dws780 wont turn on


James, Does it do anything at all when depressing trigger? Check the outlet and or extension cord you are plugged into for power, try a different outlet. With an assistant hold button on saw in the on position and give saws power cord the wiggle and bend test to see if the cord has a break in it, especially at the plug and where it enters saw body.
If none of these seem to be issue, Brushes or the trigger is probably faulty.
Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
Repair power tool with simple brush change Fine Woodworking

DeWALT DWS780 Type 1 12in Compound Miter Saw Parts

http://www.homedepot.com/catalog/pdfimages/6a/6a77cb6f-8c59-41c9-8689-65bee7a5339e.pdf

How to Replace the Switch on DeWalt DW708 Miter Saw Quick Fix

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First check that it's plugged into a good outlet. Either try another electrical item in that outlet or try the band saw in an outlet you know to be good. Next step; the power switch on the riser has to have a yellow switch key (Ryobi part number 0121010232) in it to work properly. Without the key the switch will not activate the motor. If that's all OK, you should use a volt meter to first check that power is getting to the switch through the cord, then through the cord to the motor. If that's all in order you may have a problem with the motor that can only be tested by a service center with the proper equipment to check the capacitor and armature conductance.

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1 Answer

Brand new saw trips 20 amp breaker every time I turn on the saw. It starts to turn and after about a second the breaker trips. Have tried different plugs on a different breaker. Still it will not start....


How long of an extension cord are you using? Is it at least a 14 gauge wire? It should be 12 gauge. If it 16 or a long 14 it will cause the problems that you mention.

If this is occuring when its plugged directly into the outlet then it is likely a problem with the saw. Before you take it back tho try another outlet on a a different circuit.

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When I plug my Bose clock radio into one outlet, I get nothing but static. When I plug it into a nearby outlet (with out really moving the cord), I get perfect reception. The problem is the outlet where...


The Wave Radio uses the AC power cord as an antenna. Perhaps the two outlets are wired differently regarding ground and hot.

An interesting article...

http://www.gcaudio.com/resources/howtos/acpolarity.html

As the man says in the article thecircuit tester like this...

http://www.idealindustries.com/products/test_measurement/electrical_testers/circuit_tester_e-z_check.jsp

... can be found at many Dollar Stores for cheap.

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There could be a short in the plug, but unless it was yanked on all the time not likely. First I would grab your plug at the outlet and try pulling it and see if it moves out of the outlet easily, you can have loose outlet terminals. If so change out the outlet with a new one. If that's not the issue. Next I would check the wiring connections on your dryer. Lastly I would replace the cord. And if you suspect the cord to have a short in it you can check it for continuity with a meter.

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A lot of times its simply a fuse that goes out. Either way someone is going to have to open it up and inspect the fuses first. It 's a fairly inexpensive service call.

Hopefully the fuse took the hit from the storm.

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