20 Most Recent Dewalt 7.2-18.0 Volt One Hour Charger - Page 8 Questions & Answers

You can try warranty services. However, if they are having an event in your area you might just try going down there. I have taken bad batteries to them in the past and they just GAVE me a new one.
http://dewalt.com/events.aspx

It is a sealed motor, you just buy a new one for $53. Scroll right down to the bottom of the page for Q and A. https://www.ereplacementparts.com/dewalt-dw954-type-cordless-drill-parts-c-1009_1162_2315.html ..

There is no schematic - the charger is a disposable accessory, no repair parts are available.

It is a constant current charger and I would expect something like that.

If the speed control is the trigger, it is basically pushing the slider of a potentiometer up and down the track varying the control voltage to the speed control module. Basically it is no different in principle to an old fashioned rotary or in-line volume control and just like a volume control the track can become dirty or wear out in places producing unpredictable and erratic operation. Sometimes a thorough soaking with switch cleaner will restore the function.

Have you tried dewalt.

Poor design. The switch may or may not be defective or there may be a design defect that causes the torch to turn on regardless of switch position.

DeWalt might have it.

Yes they do, but did you keep a copy of them?

Where is the DEWALT® serial number on my cordless tool?

bdk.force.com > FAQ > PKB_Article Mar 8, 2017 - Traditionally, serial numbers for DEWALT cordless tools have been located on the ... Just below the QR code is the serial number for this drill.

The easiest way is to check the battery with a meter because the charger might need a load to come on and wont see the meter leads.

For some reason, I can't find your screwdriver on the Dewalt site. They suggest calling them if you can't find an item. That info is below. That said, here is a YouTube that may be of interest. Be careful and don't burn yourself. https://www.youtube.com/watch?v=-z6izpCslFM https://www.youtube.com/watch?v=q7zra2v_Bb4 https://www.wikihow.com/Remove-a-Drill-Bit https://www.dewalt.com/support/ call Dewalt: US: 1-800-4-DEWALT ' Mon - Fri 8am-5pm EST

Need more help? Talk to me directly. http://6ya.com/repairsolutions The led switch completes the circuit

If the battery is really being fully charged the connections are probably dirty but if the battery has been left discharged for a while it could now be faulty. A faulty battery can often be recognised by the unusually short time charging takes and sometimes an extraordinarily lengthy time. A voltmeter should be used to check the battery...

If the battery fits you're ok

https://eurtonelectric.com/catalog/armatures/dewalt_494578_00_armature_rewind consider rewind if all else is OK. $115.00 vs $2,300.00

Check the brushes on the back of the motor. It sounds like they are worn.

Take the whole drill apart and check all electrical connections and switches. Make sure that the switches test out properly and that all connections are clean and seated correctly. Hit the motor with some compressed air to clean out as well. Be sure that the trigger is hitting its switch correctly and nothing is broken. Don't assume that the repair shop did this already. If it is in fact the module you may be able to find a replacement on eReplacementParts.com .

What kind of batteries are they? If they are NiMh and haven't been used for a while, they can lose their charge and NOT be sble to be charged again!

Do you have a 3rd battery that does work? Buy a battery to make sure the charger is working or that the drill is working. If yes to both of these, then your old batteries are NFG.

circuit failure or broken contact

As far as a schematic goes, I would guess that it is proprietary in nature and that not even dewalt "repairs" them. I wouldn't be at all surprised if the same model had several different versions of circuit boards representing different production runs