i picked up a used DS Lite. when i plug in the charger, the charging light goes on for half a second, then turns off. the DS won't turn on. i thought one of the ribbons might be loose, so i opened it up and double checked every connection. everything looks fine. i checked inside the socket for the charger, the soldering to the mother board and the plug for the charger. everything looks ok. the charger works fine on my other DSL and i even tried swapping batteries with no change in results. anyone have a similar experience? any help or ideas would be greatly appreciated.