Screen Flickers
I've seen several other topics about screen flickering but none are like what I'm experiencing.
A few days ago when my Powerbook woke from sleep, the screen began flashing between the normal display and black. Increasing the brightness of the screen makes it flicker faster, decreasing the brightness makes the flicker slower (2-3 seconds between black flashes). Decreasing the screen brightness to the last dot results in the screen functioning normally, although on its dimmest setting. After some time, the screen brightness can be increased a couple of dots without incident, but go too far and it flashes again.
No idea what would make it do this other than some kind of connection problem to the screen's power source, maybe some kind of logic board issue. If anyone has seen this or knows what must be done to fix it, please let me know. Thanks.
A few days ago when my Powerbook woke from sleep, the screen began flashing between the normal display and black. Increasing the brightness of the screen makes it flicker faster, decreasing the brightness makes the flicker slower (2-3 seconds between black flashes). Decreasing the screen brightness to the last dot results in the screen functioning normally, although on its dimmest setting. After some time, the screen brightness can be increased a couple of dots without incident, but go too far and it flashes again.
No idea what would make it do this other than some kind of connection problem to the screen's power source, maybe some kind of logic board issue. If anyone has seen this or knows what must be done to fix it, please let me know. Thanks.