Plugged it in it shot out smoke. Finally managed to pry it open using a couple of flat bladed screw drivers. Once I snapped it open to take a look, based upon smell it appears the main huge Capacitor has internally shorted out. Can this be fixed or should I just buy (ANOTHER) one? This is the 3rd charger in 2 years. 1st one that came with the laptop (not OEM) shorted out at the plug, the second one shorted out at the plug and this one (free at a garage sale) went up in smoke after atleast 6 months in use. This WAS a DELL OEM charger.