Chosen Solution
Hello there. I have a MacBook A1181 Penryn, with a dead backlight. I tried an SMC reset in case it was that easy, but sadly not. The backlight does not come on at any angle, and does not flicker at any point either. If I shine a torch on the screen it is all there, and the computer works fine other than the backlight. One thing I have noticed is that if I turn brightness all the way down, then on the first click there is a tiny, short buzz sound, from the right hinge area. Would this point to any part in particular before I open it up? Thanks in advance. Edit: Last 3 characters of serial are 0P1.
Adam, sounds to me like a bad inverter. The buzzing sound is most likely the transformer on the inverter. Part number for the inverter board is 922-8280 and for the inverter cable 922-8281. I am not a Mac person, just a person who enjoys this kind of hardware, so we’ll have to see what the Mac experts come up with. Hope this helps, good luck.
