Drill battery charger doesn't work

posted by firemedic13 on Jul 03, 2007. at www.fixya.com

I have a new Hitachi portable drill that employs a lithium ion battery. The drill works fine, but the charger, that I have only used once with no trouble, no longer works. The red light went on went I plugged it in, and it stayed on, as it should of, when I put in the battery, but then soon mysteriously went off. There doesn't seem to be any power getting to the charger. I, of course, checked the outlet, in order to see if that were where the problem lay, but the outlet works fine with other electronic items. I also tried plugging the charger into a different outlet, but that too had no positive effect. Any advice that you might offer me regarding what might be wrong here, and how I might fix it, would be greatly appreciated.

Best Solution:

Hi Firemedic13;
Most chargers like yours have a fuse inside them. Remove the screws that hold the charger together. The fuse will be on the low voltage side of the transformer. Un-solder and replace it with one of the same value.
If the charger is not held together with screws (doubtfull) you will have to carefully cut along the seam where they were glued together. A dremmel tool works good for this. After repairing use some ABS pipe glue to re-seal them together.
If the fuse is not blown then the unit will require testing by someone that is proficient with a multimeter. Most times it is the transformer that has fried a wire. If the sides of the transformer have any burnt spots on it then it will be the culprit.
Hope this has helped.
Best regards; HELP2DIY