Chosen Solution
After posting here with concerning my MBP17 with no backlight, it was suggested that I replace the inverter board. I ordered that from iFixIt and have replaced the board but no change…still boots up with no backlight. As I mentioned earlier, I tried replacing the screen with a known working screen assembly from another model (A1151 display assembly) but same results…no backlight. Does this mean the motherboard is the culprit?
Hook it up to an external monitor and see if the problem persists. I suggested the inverter because you said no backlight (the inverter controls the backlight) instead of black screen. Can you see the desktop by holding a flashlight at an angle to the screen? Please give the last three letters of your serial number to EXACTLY identify your machine. Would you give us a history of this problem? Thanks, Sorry for the misunderstanding
