Macbok screen brightness is broken

Discussion in 'MacBook' started by kie3ahn, Apr 7, 2010.

  1. macrumors newbie

    Apr 7, 2010
    i dropped my laptop on a tile floor and the bottom hit it flat. my computer works fine besides the fact that my computer screen's brightness is as if my brightness level was all the way down. any ideas? thanks
  2. Pax
    macrumors 6502a

    Dec 12, 2003
    What model computer?

    Can you still see the image on the pixels, ie the LCD works, but there is no backlight?

    If it's the result of a drop it's almost certain you have a hardware problem which will need specialist repair.

    You could try resetting the SMC (Apple site will say how), it might help.
  3. macrumors regular


    Feb 24, 2010
    likely the power supply to the backlight has been severed/damaged

    if you're willing to take a chance you can open up your macbook according to and look for the connection and possibly fix it
  4. thread starter macrumors newbie

    Apr 7, 2010
    yeah i can see everything, but i guess it's the backlight thats been shot. i have a macbook os x 2.2 ghz
  5. Pax
    macrumors 6502a

    Dec 12, 2003
    If it's an older Mac, it will have a CCFL backlight. Then the problem could be the inverter, the cable or the backlight. The inverter generates high voltage electricity for the backlight. I think the inverter sits near the hinge, it's a bear to get at.

    If it's a newer Mac with LED backlighting there is no inverter. Just the cable and the display. The display should be very robust though - I can't imagine the LEDs would break without the actual glass panel breaking. Maybe the cable has been damaged.

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