1 Backlight not working properly
i have the exact same problem. after a cold boot, the backlight is completely black. I changed the energy saving settings to 3hrs 3hrs. Now I can get the backlight to work by bringing the brightness to 0 and back to 1 with the F1 and F2 keys. It will go out again within a couple of seconds but if I keep it up for 5 minutes or so, it finally stays on, at which point I am able to increase the brightness and it will work for a couple of hours or so. I am considering ordering and inverter board and cable.
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Please start a new question as your problem may be slightly different and require a different solution.
由 mayer 完成的
Please give us the last 3 characters of the MacBook's serial numbers to determine your exact model. Most of these have a CCFL backlight, however a few models have a LED backlight. The circuitry and ways of dealing with the problem are different for the 2 backlight systems. The models with LED backlights do not have inverters.
由 ABCellars 完成的