Well, I am working on a DS for a friend. She dropped it on the floor of her garage and it hasn't turned on since. No lights show when you hit the power button. Thinking maybe it was a power button problem, I opened it up and looked for some problem. There isn't any visible problem though. I did unplug everything and plug in just the batter ( so none of the screens or other cables were plugged into the motherboard. When I hit the power button with my finger, I am able to get a green light from the power led for a few seconds. Any idea what the problem is?