MacBook screen blank

Discussion in 'MacBook' started by 7itanium, May 18, 2013.

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  1. 7itanium, May 18, 2013

    7itanium macrumors member

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    #1
    SO I took my 2007 white macbook apart to replace the Superdrive

    was extremely careful and made sure everything was put back properly

    now when I boot the macbook I just get a black screen.. but the power is on and the computer sounds like it is working

    I tried booting it with the shift key held down.. and after 1-2 minutes the screen turned white so I know the backlight is good and the LCD works

    any ideas?
     
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  2. Macman45, May 18, 2013

    Macman45 macrumors demi-god

    Macman45

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    #2
    Sounds like you must have missed the connector from LB to screen...or it worked loose when you put the Mac back together....There's only one way to check...Open it up again.
     
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  3. 7itanium, May 18, 2013

    7itanium thread starter macrumors member

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    #3
    I have it apart right now and I see no loose connections... the cable that goes to the display looks absolutely fine

    im at a loss
     
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  4. justperry, May 18, 2013

    justperry macrumors 604

    justperry

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    #4
    There might be some dust in between the connector, clean it with a small brush.

    If you have a monitor I would also try to connect it to the monitor, if you get output there your Logic Board is OK.
     
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  5. Macman45, May 18, 2013

    Macman45 macrumors demi-god

    Macman45

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    #5
    Maybe a crimped or damaged cable comes to mind...sometimes it's impossible to tell. As long as you were grounded when doing the repair, I can't see how you could have fried the GPU, but that's what comes to mind next.
     
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  6. 7itanium, May 18, 2013

    7itanium thread starter macrumors member

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    #6
    now I got the display to work... but it isnt right.. its all red and orange and not displaying the proper colors
     
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  7. Macman45, May 18, 2013

    Macman45 macrumors demi-god

    Macman45

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    #7
    I think that it's two possibles now....A bad GPU, or ( hopes ) a bad cable...Over time, those cables can become brittle inside...you'd never know by looking, but a replacement shouldn't cost too much....hope it's not your GPU.:)
     
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  8. 7itanium, May 18, 2013

    7itanium thread starter macrumors member

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    #8
    if I plug it into an external display and it works does that mean its likely the cable?

    I have 2-3 parts units that I can get a cable off of
     
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  9. Macman45, May 18, 2013

    Macman45 macrumors demi-god

    Macman45

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    #9
    Yes, if the internal GPU will display correctly on another monitor the odds are that you just damaged the cable....A replacement should do the trick...Let us know how you go...:)
     
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  10. 7itanium, May 19, 2013

    7itanium thread starter macrumors member

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    #10
    I never figured out the problem but I did get it working

    I went to plug it into a monitor and test it and the screen just started working

    who knows
     
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