Unfixable Backlight MB Pro A1286

[jlcaron401]

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?

 

[Kayla90]

I have the exact same problem with my MB Pro A1286 early 2011 model. Have spent a lot of money already and still doesn't work only on my external tv. Don't know what else to do. Might just sell it and buy a new MacBook

 

[minorit]

maybe d/c in-board?

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?

well i'm not a pro, but trying to fix now the same problem on my late 2008 mbp. a friend of mine with the same mac came to me cause his backlight didn't work and we changed parts to figure out what the problem was (mine was working fine at this time).
so we swapped logic boards (only logic board, not d/c in-board) and tried - still not working. then we also tried swapping d/c in-board - still not working. we put his parts (logic-board and d/c in-board) in my mbp (my lcd-backlight was still ok before swapping arround) - backlight did'nt work.
conclusio: since my logic-board has now a blown fuse (tested it today with digital multimeter continuity check -> no beep) some of his parts must have caused this. first thought his d/c in-board so you might have also have the same issue. just guessing...
good luck,
minorit

 

[augtron]

DO YOU HAVE A PICTURE OF THE LOCATION OF THE FUSE?