Display is gone but can still faintly brighten the dark screen
I am trying to troubleshoot whether or not to replace my whole LCD display. It seems my display went dark after an update to 10.6.7.
Here are the symptoms:
Even though I have no display, I can brighten and darken the dark screen. I assume the back light is still working.
I can use an external monitor. I believe that rules out the graphics chip.
I can share the screen.
Computer still operates normally otherwise.
Has there been an issue with this latest update? Seems to much of a coincidence.
What would be the recommended course of action to take and test before replacing the expensive LCD unit.