2 Replies Latest reply: Aug 9, 2013 3:20 PM by tim_85
mctiger227 Level 1 Level 1 (0 points)

Hi all,


My 2008 MacBook is a trusty steed, but starting on Sunday (it's Wednesday) it's started to freak me out.


Randomly, the screen will just go black-- all the way down to the darkest setting on the Brightness. Sometimes, I can get it back ny F1ing it all the way down to the bottom, and then raising the brightness gradually to a low setting. That trick is working less and less, though.


I also just noticed that when the screen is dark, so is the apple light on the outside of the lid. So I'm thinking it has something to do with the backlight, rather than a software bug, though what do I know?


Any tips or hints? Please? I can't really replace the thing at this point in time, and I'd really like to avoid a pricey repair bill.

MacBook, Mac OS X (10.5.8)
  • 1. Re: Screen goes black, Apple light on lid goes dark
    cantrepeat32 Level 1 Level 1 (20 points)

    The Early 2008 MacBooks seem to have a higher instance of having the backlighting go bad from my experience in working on them.


    Usually this is caused by either the inverter cable or the display cable/panel going bad. The inverter cable is tucked right under the hinge on those models, and when the screen is opened and shut a lot, it creates tension and eventually wears out the cable. It's kind of similar with the display cable.


    Usually symptoms will include the display going dark at a certain angle or if the display goes dark when the computer is bumped, moved, etc. the inverter board could also be going if it's intermittent with no motion.


    It sounds to me like the inverter cable, inverter board, or display panel is the problem with the computer. The first two are not too expensive to fix (but do require a lot of disassembly), the display panel is not unfortunately. But there usually isn't a good way to tell unless the computer is taken apart.


    My best suggestion is to take your MacBook to an Apple Aurhorized Service Provider or an Apple Store. They will be able to tell you what the issue is, and hopefully it's not the display panel. :-)


    I hope this helps!

  • 2. Re: Screen goes black, Apple light on lid goes dark
    tim_85 Level 1 Level 1 (0 points)

    I know it's been a while since you posted but I had the same problem and thanks to sheila_m. I solved this problem. See this discussion. Basically I reset the NVRAM (a few times).


    Hope it's not too late for your MacBook.