1227 Views 4 Replies Latest reply: May 8, 2006 9:15 PM by ccsccs7
If your computer was an iBook rather than a powerbook the cause would undoubtably be a part called the Reed Switch, whose cable often gets cut inside the display hinge.
Since it is a powerbook I'm really not sure. I've not seen that issue in a powerbook though I think it might possibly be the inverter board. You should take it to an AASP and let them take a look as the problem is definitely hardware and not software.
I have the same pwrbk (12" 867MHz) and recently have been having a similar problem. If it goes to sleep, the screen will not come back on when woken up, but I can see the computer is running on the black screen. However, mine seems to be fine after I restart it by holding the power key for 5 seconds, then restarting. Back light will come back on if I 'put' it to sleep and wake it up again, but not if it goes to sleep on it's own. Sorry this is not much help, but may point to a software problem rather than hardware.
i am having a similar problem. when my powerbook starts up, the backlight is on...however once the "apple" appears during startup, the backlight turns off. i can still see - faintly - the desktop, but can only use my laptop when its connected to an external monitor.
i've tried reseting my pram...and pmu....and nothing seems to work.
could it be software related? i just updated to the latest version of the system - 10.4.6
i've had my machine for over 3 yrs...
anyone have any ideas?
powerbook g4 12" Mac OS X (10.4.6)