Backlight Turning Off, Inverter Problem?

Discussion in 'MacBook' started by balang47, May 18, 2010.

  1. balang47 macrumors newbie

    Dec 7, 2008
    Ive done a bit of research on this but there seem to be a few different kinds of problems that people can get with the backlights on a Macbook. I have a Macbook 13.3" Black and the backlight turns off after 20 or so seconds, i can still use the computer if the backlight is on its lowest setting. Ive read that its most probably the inverter that needs replacing and was wondering if anyone could confirm this or is there another way of fixing it??

    thank you
  2. balang47 thread starter macrumors newbie

    Dec 7, 2008
  3. AshMan macrumors regular

    May 1, 2010
    Could be inverter. Have you checked the energy saver settings and orscreen brightness controls?
  4. Pax macrumors 6502a

    Dec 12, 2003
    I have a 2006 Macbook and had inverter problems. The symptoms were slightly different:- on the highest brightness setting the backlight would flicker. But not on lower settings.

    So I think you have an inverter problem, but I am not sure. I hope so - inverters are cheap to replace, LCDs are not! The replacement job looks quite complicated though - you have to really tear into that Mac. I am quite electronics-handy but I would not attempt it.

    I think the only way you will be sure will be to replace it and see if it fixes it
  5. balang47 thread starter macrumors newbie

    Dec 7, 2008

    Have you fixed yours or just use it at low brightness settings?

    Ive done all the Energy saver, PRAM and so on resets, but nothing. It does look quite time consuming to swap out but your basically only using a screw driver so, if the problem gets any worse and after ive spoken to apple i may attempt to replace it...

    I noticed there were a few on ebay but the prices were a little low, anyone think their ok?
  6. l.a.rossmann macrumors 65816


    May 15, 2009
    It could be the inverter, the backlight in the screen, the cable connecting the inverter to the logic board(if it's the model where the cable sits like a piece of cinammon toast crunch instead of like a flat rectangle), or the board.

    Most likely the inverter. Order the inverter board that includes the cable that attaches it to the logic board.
  7. balang47 thread starter macrumors newbie

    Dec 7, 2008
    I find it weird that I can use the computer no problem on the lowest or second lowest setting. but anything higher it will turn off. Maybe the inverter is worn and cant handle the higher voltage.
  8. fluffyx macrumors 6502

    Oct 25, 2007
    Those symptoms are almost certainly caused by the inverter.

    Take your Mac to an Apple Store. Apple's price isn't outrageous for inverter replacement; around $180 + tax, in most cases.

    If your Apple Store quotes higher ($280 or so, which they sometimes do), use an Apple repair shop who will do it for closer to $180 :).
  9. eman macrumors 6502a

    Nov 5, 2007
    In the great white north
    Or just order the inverter fromhere for $7 and install it yourself.
  10. fluffyx macrumors 6502

    Oct 25, 2007
    The inverter installation is a lengthy process. I suppose some folks would find it to be a "do it yourself" project, but to be fair, there's not a much more painful repair you can do on a MacBook. Without the proper tools and experience, it'd be quite a pain.
  11. Pax macrumors 6502a

    Dec 12, 2003
    I solved it by giving the MB to my girlfriend and buying a new MBP :)
    But I think mostly she uses it 1 notch below full brightness where it is fine
  12. AE50P macrumors newbie


    May 28, 2010
    I have a 2006 white first generation and i had a similar problem. I took it into the apple store and got it fixed for free.

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