Part # of the Voltage Regulator in Dewalt Drill

Charge the battery and try again. If still bad, make a warranty claim. You can't beat their warranty, they have great faith in the product!

Warranty Information' DEWALT

https://www.dewalt.com > support > warranty
DEWALT Mechanics Tools are covered by the manufacturer's FULL LIFETIME WARRANTY. If any DEWALT Mechanics Tool ever fails for any reason, DEWALT will replace it.

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  What is the warranty for my DEWALT tool?

  https://support.dewalt.com > en-us > articles > 8159827...
  Nov 6, 2022 - For all DEWALT® products stating they come with a 7 year limited ...
  
  and
  https://support.dewalt.com/hc/en-us/articles/360056776752-Why-is-my-drill-stalling-#:~:text=IF%20DRILL%20STALLS%2C%20it%20is,THIS%20CAN%20DAMAGE%20THE%20DRILL.
  
  IF DRILL STALLS, it is usually because it is being overloaded or improperly used . RELEASE TRIGGER IMMEDIATELY, remove drill bit from work, and determine cause of stalling. DO NOT DEPRESS TRIGGER ON AND OFF IN AN ATTEMPT TO START A STALLED DRILL - THIS CAN DAMAGE THE DRILL.Dec 6, 2022Why is my drill stalling? - DEWALT
  
  https://support.dewalt.com > en-us > articles > 360056776...
  
  

The power cord for the charger is not suppose to be "a servicable item". You're suppose to buy a new charger. But it could be replaced if you have the skills.

It could be due to bad brushes or commutator. You would see lots of sparks coming from it.

Push the battery in and out while pressing the trigger on the the drill to see if there is a loose connection here.
Check the terminals inside the drill and the battery terminals .These sometimes become tarnished and don't make contact. Clean with very fine sandpaper.

Hi, Take the drill apart using a star driver. When taking the chuck assembly from the yellow section have the drill chuch down to stop bits falling out. Once handle is apart popout the triggger assembly. Remove the two power leads from the assembly. Try a direct connection to the battery (polarity doesn't matter. If the motor goes it means that the trigger is U/S. Put a tester across the terminals (either set). You may have a short (as I had). It appears to me that the trigger is not user servicable. I used one from a DeWalt recip saw with a mod on the reverse lever. Works well.

Good luck.

Probably the brushes need replacing on the drill. Order new ones from a Dewalt parts dealer on-line.

Hello,

The problem I have seen is the trigger. I know it's a pain, but that was the the problem with mine......The trigger has an integrated regulator and Rheostat that controls speed and voltage and when she goes,...........That's it! Sorry.....

Dr. Phil

have to replace whole trigger assembly.

worn brushes in the motor can also cause intermittent function, if you havent already checked those. i'd replace those first if they have never been replaced or look worn, broken, cracked, or if springs seem worn.

With the DeWalt cordless drills, the weak link is that the leads tend to burn (melt) off at the motor brushes, It's happened to mine now about 3-4 times, so much so I've had to replace the wires after they got too short to put a new terminal back on them!

The only other issue is that the trigger mechanism could be faulty. but before you spend the bucks on that, you can easily check to see if it't the wiring or the trigger assembly.

Before you take anything apart, make sure the top speed selector is at #1, and the torque setting set to the lowest setting. (makes it easier to remember if you have the speed selector come out of the drill body)

Now lay the drill on it's side and with the battery out of the tool, remove all the screws that hold the two halves together. Take off the top half and look at the back end of the tool to see if the wires going to the motor are in good condition and not burned off the motor brush tabs. If they are, you can either resolder them or recrimp them (DeWalt used different methods for different models) with a new .25 female terminal (any auto or hardware store will have them)

You can give the repair a quick check (IF you are careful) by putting in the battery into the lower drill body and holding the drill motor, gently squeeze the trigger and see if the tool runs. If so, you've fixe it and can put the drill back together.

If the wires are good, then it's the trigger assembly and you'll have to get one from either a DeWalt Authorized service center or distributor that carries repair parts, as these are sealed units and can't be fixed (I've tried). There are some available online too, if you wish to do the replacement yourself, which is a straight forward unplug and plug operation, now that the tool is apart.

Reassemble, making sure the speed selector is in the slots on the tool body and everything else lines up correctly. Install the screws and you're back in business.

Hope you find this very helpful and best regards!

With the DeWalt cordless drills, the weak link is that the leads tend to burn (melt) off at the motor brushes when the drill is overloaded. It's happened to mine now about 3-4 times, so much so I've had to replace the wires after they got too short to put a new terminal back on them!

The only other issue is that the trigger mechanism could have failed due to the hevy load of drilling in concrete. But before you spend the bucks on that, you can easily check to see if it's the wiring or the trigger assembly.

Before you take anything apart, make sure the top speed selector is at #1, and the torque setting set to the lowest setting. (makes it easier to remember if you have the speed selector come out of the drill body)

Now lay the drill on it's side and with the battery out of the tool, remove all the screws that hold the two halves together. Take off the top half and look at the back end of the tool to see if the wires going to the motor are in good condition and not burned off the motor brush tabs. If they are, you can either resolder them or recrimp them (DeWalt used different methods for different models) with a new .25 female terminal (any auto or hardware store will have them)

You can give the repair a quick check (IF you are careful) by putting in the battery into the lower drill body and holding the drill motor, gently squeeze the trigger and see if the tool runs. If so, you've fixed it and can put the drill back together.

If the wires are good, then it's the trigger assembly and you'll have to get one from either a DeWalt Authorized service center or distributor that carries repair parts, as these are sealed units and can't be fixed (I've tried). There are some available online too, if you wish to do the replacement yourself, which is a straight forward unplug and plug operation, now that the tool is apart.

Reassemble, making sure the speed selector is in the slots on the tool body and everything else lines up correctly. Install the screws and you're back in business.

Hope you find this very helpful and best regards!