LCD NO Backlight - Extra Monitor Works FINE - Backlight Randomly Shine
NEED FOR SURE ANSWER IF POSSIBLE : )
My MBO was working just fine had fan noise then then went to sleep mode then when I attempted to wake it up the backlight was fully off i reseted everything sometimes randomly the screen lights up for a few seconds then back off but once in a blue moon.
What can this be? It works with external monitor just fine keyboard lights up and all.
I CAN SEE with a flashlight sideways everything just fine but no backlight.
What can i test / check to see what the issue may be?
THANKS : )
Since you can see the the desktop dimly your most probable failure is the LED driver board. Here's how to replace it, but check your connections first: MacBook Pro 15" Core 2 Duo Models A1226 and A1260 LED Driver Board Replacement
Here's the part: MacBook Pro 15" (Models A1226/A1260) LED Driver Board
LED Driver Board controls the LED backlight. — 23 available at 44.95 each.