Chosen Solution
Hello Guys, i have a 2008 MacBook Pro Unibody Model 1286A. Issue: No Backlight, the desktop images can be seen when shining a flashlight through logo Things done so far: 1-Replaced LCD screen 2-Reset SMC, PRAM 3-Reseated RAM, tested RAM for function. 4-Have video and backlight on external monitor 5-Swapped out Logic board for used one; still no backlight
- Logic board was supposed to be working 6-Swapped out for another logic board; no backlight again
- Logic board again supposed to be good, but this one was used on machine that had an inverter. mine has no inverter. Notes; All other functions with Second logic board are Ok. Any help would be appreciated.
Sounds like you either have a bad LED driver or the fuse links are blown on the logic board. Do you have an DVM to test the fuses? The fuses are similar to the resistors they will have a dot or an O marking and they should be near the LVDS connector. Update U9701 is the LED driver. On this board I believe it is a custom Apple driver codenamed GOSHAWK. F9800 is the fuse.
