I'm about to give up on this laptop but thought I would start a thread to see if anyone has any ideas. I have a MB Pro Model A1286 that the LCD backlight will not illuminate. I have reset the PRAM and SMU, swapped the LVDS cable, swapped the LCD panel, and replaced the logic board. The image is visible on the screen with a flashlight so I know the panel is getting signal. The external monitor output works fine. Swapping the HDD from this laptop into another does not produce the same issue. Any ideas?