オリジナル投稿者： arbaman ,
I’m not much of an expert on those Macbooks but from a quick look there isn’t much on the board regarding backlight. There are only a couple of rails coming from GPU to the bigger connector, one for the signal enable and the other one for control (brighteness dimming) going to the left I/O connector. Thus it should be either the GPU or the inverter board. Not much of an help unfortunately, but no fuses or things to check on the board.