First off I'll say that I already had the logic board replaced, but it was before the big recall so maybe they put in another faulty one? She was watching a DVD, paused the computer, came inside (we were in the car), then when she opened the computer the screen was black. She ejected the movie, shut down and it still is black. The computer still makes noises, and the volume buttons still work (as does the startup tune). Also I've tried the contrast buttons, and its not that. Any ideas? Its a 14.1 inch iBook G3, 800MHz. Its the white one, with two usb ports.