Vertical lines covering half of my display

Discussion in 'MacBook' started by bobbytomorow, Dec 26, 2010.

  1. bobbytomorow macrumors 6502

    bobbytomorow

    Joined:
    Nov 10, 2007
    Location:
    Left Coast
    #1
    My 2008 Penryn White Macbook siplays vertical lines and or vertical grey/black bars on 60% of the display. This happens from when it is powered on until and including when you arrive at desktop. The space the lines occupy does not increase or shrink, they have covered the area from the moment the problem arose.

    it is not the common line issue that a Tiger update solved since this Macbook came with Leopard pre-installed. The lines are still there with the hard drive removed and they are still there when I booted a live Ubuntu CD, so I have ruled out software being the cause. Also I have ruled out inverter because I would not be getting any backlighting.

    So....

    To me that leaves:
    -The LCD display panel itself (although there is no physical damage and it has never been dropped)
    -The display data cable that connects LCD to the logic board
    -GPU

    Any thoughts, tips or experience on this? I currently have it completely disassembled and I am not afraid to try anything ;)

    Here is a pic

    [​IMG]
     
  2. Matthew Yohe macrumors 68020

    Joined:
    Oct 12, 2006
    #2
    Could it have something to do with the fact that you've dismantled the screen?
     
  3. bobbytomorow thread starter macrumors 6502

    bobbytomorow

    Joined:
    Nov 10, 2007
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    Left Coast
    #3
    Is that a joke? I've obviously disassembled it to attempt to diagnose and repair the issue, no Apple Care.
     
  4. Matthew Yohe macrumors 68020

    Joined:
    Oct 12, 2006
    #4
    Yes.
     
  5. bobbytomorow thread starter macrumors 6502

    bobbytomorow

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    Nov 10, 2007
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    Left Coast
  6. brdnboy macrumors regular

    Joined:
    Feb 25, 2008
    Location:
    Boulder, CO
    #6
    I would guess that it is the LCD, then the cable, and lastly the GPU. Just from my experience, a bad GPU will leave you with a lit sleep light and a black display, a bad cable/connection will leave you with a lit white screen, and a damaged LCD will leave you with what your picture shows.
     
  7. eman macrumors 6502a

    Joined:
    Nov 5, 2007
    Location:
    In the great white north
    #7
    i would suspect a bad lcd. Use the dvi and output the video to another external lcd screen and see if you can see the desktop okay. If you can see the desktop fine on an external lcd, I would replace the lcd.
     
  8. l.a.rossmann, Dec 27, 2010
    Last edited: Dec 27, 2010

    l.a.rossmann macrumors 65816

    l.a.rossmann

    Joined:
    May 15, 2009
    Location:
    Brooklyn
    #8
    I would bet my kitty that it's the LCD. Everyone wants it to be the cable because it's cheaper, but it never is. And the GPU on that machine is bulletproof, unlike the nonsense that went into the A1226/A1260 machines.

    For future reference, removing the clamshell & inverter cover are unnecessary for this process.
     

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  9. iThinkergoiMac macrumors 68030

    Joined:
    Jan 20, 2010
    Location:
    Terra
    #9
    I'm positive it's a bad LCD. This is a classic symptom. Sometimes they just go bad for no apparent reason, no physical damage necessary.
     
  10. AlexM-1997 macrumors member

    Joined:
    Dec 31, 2010
    #10
    haha i thought that was very funny

    but back to your problem.
    im no expert with computer problems but my mum had a very similar problem with a toshiba (yes i know toshiba) except the bars where smaller and more on screen but i found out it was a problem with the actual display
     
  11. axu539 macrumors 6502a

    Joined:
    Dec 31, 2010
    #11
    I replaced a cracked MacBook screen last year and when I put the new screen in, I had the exact same lines. What I did was disconnect the LCD connector, then I did an SMC reset and the screen started working fine again. Hope that helps.
     
  12. bobbytomorow thread starter macrumors 6502

    bobbytomorow

    Joined:
    Nov 10, 2007
    Location:
    Left Coast
    #12
    Ok fellas I replaced the display and all is well, I tried a different cable, inverter, etc...and you guys were right it was the panel itself that was shot

    Awesome, thanks a lot guys :D
     
  13. eman macrumors 6502a

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    Nov 5, 2007
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    In the great white north
  14. AlphaDogg macrumors 68040

    AlphaDogg

    Joined:
    May 20, 2010
    Location:
    Boulder, CO
    #14
    I was given a MacBook that has the exact same issue, although in its case, no image would show up on the screen until about 20-30 seconds after the famous BONG sound. So presumably, it would show up at the login screen. As you can see in my sig that I have my own MacBook Pro, and I just took on this MacBook as a project.

    I had a 2007 MacBook before my MBP, so I had some spare parts when I took on this project. I swapped video cables, and inverter boards. Nada. Nothing worked. I decided not to put much money into this, because it was in bad shape, so I just separated the entire display assy, put a magnet over the sleep sensor, and took the Airport antennas out of the display assembly. I have it hooked up to my KVM switch and I use it in conjunction with my G5. I have like 5 MagSafe adapters, so I just left one at my desk so I could use it as a desktop.

    Here's a pic. It is very similar to the OP's pic.

    [​IMG]

    Edit: also, it is a 2.16GHz Mid-2007 White MacBook with a C2D processor.
     

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