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  1. #1
    Horizontal Lines/Display dies 15" 2012 Macbook

    Member Since
    Sep 22, 2013
    Posts
    3
    Horizontal Lines/Display dies 15" 2012 Macbook
    Attachment 19524Hey everybody,

    My Macbook's display has been turning into horizontal lines lately, sometimes it also makes the screen split.
    I've noticed that if I hit the laptop on the bottom, then it can vary the lines and/or make the screen split. When I restart it all goes back to normal.

    I tried opening it up and unplugging/replugging the display cable.

    It's a 2011/2012 15" Macbook Pro
    2.2GHz Intel i7 "Sandbridge"

    Any ideas?
    Attached Images Attached Images

  2. #2
    Horizontal Lines/Display dies 15" 2012 Macbook
    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
    Fort Worth, Texas
    Posts
    45,293
    Specs:
    27" iMac i5, 3.2 GHz, iPad 3, iPhone 5c, iPhone 6+, 3 iPods, Yosemite
    Is the machine still under warranty or extended Apple Care? If it is, take it on in and let Apple diagnose it. It may be a loose cable from your logic board to the display area. There's more than one cable that can cause those symptoms. If not under warranty any longer, you can open it up once more but this time follow directions for all the cables as given at the ifixit site.

    Go here: iFixit: The free repair manual

  3. #3
    Horizontal Lines/Display dies 15" 2012 Macbook

    Member Since
    Sep 22, 2013
    Posts
    3
    Thanks, but it's out of warranty, and I tried pressing the other cables back in.

    Thinking it could be the GPU...

  4. #4
    Horizontal Lines/Display dies 15" 2012 Macbook
    pigoo3's Avatar
    Member Since
    May 20, 2008
    Location
    U.S.
    Posts
    31,502
    Specs:
    2011 13" MBP 2.3ghz, 8gig ram, OS 10.7.5
    What happens if you plug an external monitor into it. Same thing...or no lines?

    For the heck of it...you could also try an SMC reset:

    http://support.apple.com/kb/ht3964

    - Nick
    - Too many "beachballs", read this: Beachballs
    - Computer seems slower than it used to? Read this for some slow computer tips: Speedup
    - Almost full hard drive? Some solutions. Out of Space
    - Apple Battery Info. Battery

  5. #5
    Horizontal Lines/Display dies 15" 2012 Macbook

    Member Since
    Sep 22, 2013
    Posts
    3
    I tried plugging it in when the lines were across the screen, and it didn't recognize the monitor :/

  6. #6
    Horizontal Lines/Display dies 15" 2012 Macbook
    pigoo3's Avatar
    Member Since
    May 20, 2008
    Location
    U.S.
    Posts
    31,502
    Specs:
    2011 13" MBP 2.3ghz, 8gig ram, OS 10.7.5
    Quote Originally Posted by jlefebvr View Post
    I tried plugging it in when the lines were across the screen, and it didn't recognize the monitor :/
    Try plugging in the external monitor...then restart the computer (with the external monitor plugged into it).

    - Nick
    - Too many "beachballs", read this: Beachballs
    - Computer seems slower than it used to? Read this for some slow computer tips: Speedup
    - Almost full hard drive? Some solutions. Out of Space
    - Apple Battery Info. Battery

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