Question about Dewalt DW421 5'' orbital sander

1 Answer

I have replaced the brushes, switch and tested the cord yet the sander will not operate, Any suggestions.

Posted by on

Ad

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 97 Answers

Check the comutator (where the brushes contact on the shaft) and make sure it is clean and not shorted

Posted on Jul 26, 2009

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

How do I troubleshoot why the sander is not turning on? Have replaced switch and opened the sander to check all connections and there is nothing not intact.


Try and test the motor coil if you can to see the motor is intact. If you notice a small circuit board inside, you might as well test its electronic components, e.g. capacitors. You may also test the power cord and the pins to prove they are OK. If these options are exhausted, you can refer to an experienced service tech.

Nov 09, 2015 | Sander Tools & Hardware - Others

1 Answer

My porter cable belt sander 352vs just went dead. I was using it for about 15 minutes and then it died with no warning signs. I subsequently plugged it into a variety of outlets thinking that was the...


Unplug the the sander open the plate to the power cord check for broken wires. Use a Digital Multimeter on the cord to find hidden broken wires in the insulation, if the power cord checks out fine it is in the motor or the switch check the switch and wires with the Digital Multimeter if the switch is fine it is in the motor replace whatever you find that is bad.

Sometimes Harbor freight tools will give away 7 Function Digital Millimeters just for visiting their store check the ad in the link below.

Harbor Freight Tools Quality Tools at Discount Prices Since 1977

Cheers
Billy from Hayward.

Dec 22, 2014 | Sander Tools & Hardware - Others

1 Answer

No powerto sander. Cord is good,switch is good and brushes are long


It sounds to me that you have used the sander a lot and the vibration has broken a wire or it's about to break on the field windings. The brushes you need to look at to see if worn. But I kind of think wire problem. I had this happen on mine and opened it up to find this is what happened. The sander would be turned on and would not operate until I turn upside down and it would work. This is great if you are sanding upside down but this is just a sign that you are on borrowed time as this will eventually not turn on at all. I was able to fix mine with new wire crimp connection and solder with heat shrink material. If not you can order new field winding if this is what is wrong. Cleaning up the sander won't hurt either. You might want to see what a new sander will cost vs. part. Good Luck!

Aug 23, 2012 | Dewalt Sander,random Orbital - DEWALT

1 Answer

My Bosch 1276 DVS belt sander abruptly stopped working. Could it be the switch?


that is possible, but was the tool operating properly first?? unplug tool and check the cord for any breaks, then what I would do is clean the tool as good as possible with compressed air and if you can remove the brush caps do so and check the condition of the spring and clean the area. DO NOT sand the brushes but look across the face to see if both look worn evenly. If you have a volt ohms meter check from the plug to the brush holder with the switch on brushes removed to see if you have continuity and if not then I would have to think the switch

Feb 11, 2011 | Bosch 1276DVS 4" x 24" Dustless Variable...

1 Answer

I have and OLD bench 1


The local hardware store has brushes in all different sizes in a box, next to the switches, fuses, plugs, cords, tool type stuff. They are standard sizes, should be able to find them no problem. Hope this helps.

May 25, 2010 | Campbell Hausfeld Tools & Hardware -...

1 Answer

No power nothing happens


Milwaukee tools have a 5yr warranty, best thing to do is to take it to a service center. It could be anything from the cord to switch, brushes, field coil etc. If it is newer than 5 yrs, thats the best route.

Feb 06, 2010 | Milwaukee 6140 6 4 1/2in. Sander/Grinder

1 Answer

Intermintly will not come on


Take the brushes out, inspect them, and blow out the whole tool with compressed air.

Mar 17, 2009 | Dewalt D26453 3 Amp 5 Inch Variable Speed...

1 Answer

A makita 9227C does not work


Hi, Unfortunately there is no external test, It has to be opened and troubleshot with a multimeter. Especially something with a variable speed controller, power cord, brushes, switches, ect. It could be several things. If you are technical enough to take it apart let us know we will try to help. Good Luck to you!

Feb 20, 2009 | Makita 7" Electronic Sander - Polisher...

1 Answer

CLEANING SANDER BUSHINGS


It's usually not the brushes but the commutator that needs cleaned. The commutator is the surface the brushes ride on. Go to Walgreens and buy a multi-surface nail file, one of the soft ones that are about 3/4" square with different colors for different grits. Don't start at the coarse grit!! Start at the medium grit and lightly drag it over each section in a smooth arcing motion, when the commutator surface is shiny it's clean, then replace the brushes with new ones.

Feb 16, 2009 | Bosch Power Tools Sanders Orbital Sanders

Not finding what you are looking for?
Dewalt DW421 5'' orbital sander Logo

Related Topics:

202 people viewed this question

Ask a Question

Usually answered in minutes!

Top Dewalt Tools & Hardware - Others Experts

John Trevino

Level 3 Expert

1388 Answers

Doctor PC
Doctor PC

Level 3 Expert

7733 Answers

Ruben Bustamante

Level 2 Expert

119 Answers

Are you a Dewalt Tool and Hardware - Other Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...