Bought a dewalt 14.4v hammer drill almost 25 years ago. Looks like this and I believe it is a DW996. Great drill. Had both batteries rebuilt once. Love the pistol grip. Old 2 speed model with plastic gears. Recall it was a refurbished unit. I know those new 20v Li Ion units are really nice. Small and powerful. But I am not in the market for a new drill (or so I thought). A month or so ago the charger up and died. I used the last bit of juice I had in the batteries to drill out the security fasteners and opened it up. This is what I found: I suspect that the main fuse is burnt out. It is the glass fuse that I circled in red. On the circuit it is the first component after the + input. The glass is all burnt out. It does not read continuity. Should I de solder it and replace? Any advice. I know I have to use some desoldering tape. What kind of replacement fuse? In the mean time I searched ebay for a replacement. Ends up chargers hold their value. However old drills with dead batteries do not. For the price (or really close) of a used charger I could easily get an old drill + charger + bad battery (but you can rebuild them) + case. I decided to look on craigslist as well, and sure enough there was someone selling a drill + charger + batteries right down the street. The drill he was selling was DCD939VX. Basically my drill but newer; metal gears, upgraded chuck, 3 speed (higher speed), more torque. I liked this unit so much that I decided to use it instead of my older drill. The chuck is a very nice unit, and the fact that the spindle doesn't spin allows you to open/close the chuck without running the motor. I was using this drill to drill a hole in my front brake caliper for a Vapor wheel sensor and noticed that the drill bit had a bit of run out. Nothing bad, and hardly noticeable when driving screws, but noticeable when drilling a 1/8" hole. So the spindle is bent. Is this part of the chuck or something deeper within the drill. Will replacing a new chuck solve this?