Ask Max: My Powerbook G4 display went black, what now?
I keep records for the church on a Mac Powerbook G4 and I recently encountered a problem where the display window is black. I did not inherit an operating manual, and I am sure it's something simple. How do I get the display on?
Well the display blacking out could be a few things. The system could have gone to sleep; you can wake it by pressing the space bar. The battery could have run out of charge. Press the button on the bottom of the battery to check the charge indication lights. If only one light flashes than it is not charged up. You could have also turned the display brightness down. Turn the brightness back up via the larger of the two "Sun" keys. The big and small suns will be printed on two of the function keys.
It could also be a failed backlight in the display, which is a big problem. You can test that by shining a flashlight on the display and seeing if you can see items on the display but darkened.