yep, probably the inverter board.
hold a bright light up to the screen, I could still ( faintly) see the windows logo and stuff when the backlight on mine went out.
took about an hour to replace it ( I had never done it before), be careful with the screen they crack very easily!
Smoke em if you got em, and drink your glasses to the bottom...-Will Whitmore
Charter member: T.O. club.