Need help for Nintendo DS Lite screen lights up white for a second then black and no further?

The only thing that happened prior to the incident was it fell 3ft. off the top of the TV and landed on its side by where the green light is onto the Playstation II which was on the floor. The DS has worked fine til now.  Now when I turn it on the green light turns on and the bottom screen flashes white and then nothing.  Any suggestion?  I'm very good with electronics so I'll try anything.

Thanks,
Kris