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I need the schematic for the craftsman #1425301 7.2v - 24v battery charger to find out the value of a burnt out resistor. Can anyone help?

The charger gets power but will not charge the batteries. I know the batteries are good and when I opened the unit up, the fuse was not blown. Any ideas?

Posted by Anonymous on


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Posted on Jan 02, 2017

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SOURCE: Dewalt battery charger

You will need he correct charger, the 24V will destry a very expensive battery.

Posted on Nov 07, 2008

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SOURCE: I have burnt out one of the resistors in my 18


Posted on Oct 22, 2009

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SOURCE: My new Black Max 24v drill charger will not charge the battery

You indicate that the drill is new. I'd suggest you return it for a replacement. Seems to be a defective or wrong charger. If you have problems and If you paid by credit card call the card company and have them stop payment on that charge.

Posted on Feb 21, 2010

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SOURCE: dc9700a charger schmatic

Check that the black microswitch is operating when a battery is placed in the charger. The microswitch button is pressed by a blue plastic piece. Over the years, the part of the blue plastic that the battery slides over wears down so that the switch does not operate. You can check it by slowly inserting a battery and listening for the switch to click.

I made a temporary fix by grinding down a stop on the blue plastic actuator so that it sticks more into the battery well, then wrapping tape around the portion that actually presses on the switch.

I doubt that you will be able to purchase that plastic actuator, but you might be able to find a used working charger on your favorite auction site.

Posted on Apr 03, 2010

  • 7733 Answers

SOURCE: I have one Makita battery

Look at and the parts diagrams

Posted on Nov 02, 2010

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I would get out my trusty multimeter and chase 24v though the device.

You may need a VOM meter only $9

Set the meter to read VAC, you should get 30VAC out of the transformer. Next check the rectifier section, Set the meter to read VDC, the output should be about 29VDC. There is a fuse in there that you can check out. Then there is the regulator, if any part of that is fried, you're going to have a hard time finding parts. i really miss the 60's when there were electronic stores on every corner. There used to be a time when you could order your your TV as a kit. You could literally teach your kids something useful at the kitchen table. Quite frankly a 2 amp charger cost $14 4 amp cost $28. Not worth fixing really.

Chargers can be found here

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