20 Most Recent Dewalt DW411 quarter - sheet palm grip sander with dust collection - Page 2 Questions & Answers

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Either the blades are incorrectly installed causing the head to jam or the safety cover is not installed properly - there is a safety mechanism that locks the cutter head when the cover is removed.

Typical cause is low voltage - but can also be a bent driver or something jammed in the nail track. Is this a finish nailer or framing nailer?

That symptom usually indicates a low voltage issue - not sure how the adapter may affect this, I've never run them with a 20v battery. Try it with a standard 18v and see if you have the same issue - please comment back with the results, I'm curious.

This is a common problem with this compressor and still is a problem in 2014.It is under powered and trips the reset

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Without inspecting tool, it would be hard to definitely tell what part, I would call Dewalt, they will be glad to help you. You do not want to throw parts at it. 1-800-433-9258

either not properly closed or latch damaged

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If previous nails worked, they sold you the wrong nails.

Contact customer service at dewalt.com. Be sure to have your model and serial numbers ready, as wiring diagrams can change during a tool's production run.

From your description it sounds like the bearings on the armature seizing up . Mainly the bearing on the bottom towards the pad. I see it a lot . It'll seem ok when turned on but under a load it can stop , slow down , smoke ....I'd start by checking the bearings. If it was the cord power would cut in and out completely. It doesn't have a variable speed switch or any speed sensors on that model. .if you have any questions feel free to ask and give as much detail as possible plz.

reading the user manual reveals that it requires oil before using and regular oiling during use that is simply attained by disconnecting the air line and putting a few drops of machine oil in the connection and reconnecting the air back up that oil then lubricates the seals and piston of the machine do that and it most likely will work again

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DeWALT DW433 Type 1 3 21 Variable Speed Belt Sander Parts And the correct tools