Thin black/blue line blinking intermittently on screen

Discussion in 'OS X Mountain Lion (10.8)' started by TRDGT4Writer, Jun 26, 2017.

  1. TRDGT4Writer macrumors regular


    Feb 24, 2014
    Hey Mac pros,

    I'm running an older non-retina 2012 MBP15, 16GB RAM, 2.7GHz i7 quad-core, 1GB Nvidia 650M dGPU, Antiglare screen, and Samsung EVO 1TB SSD that's running 10.8.5 Mountain Lion. As I'm typing this, I'm getting blue and black lines on the center screen but not all the time. I've been reading on the forums and by reading a bit more, they're thinking to be a logicboard issue than a screen issue. The MBP has came back from repair after a hard drive crash and the fans have been cleaned.

    I can't take a screen grab because it doesn't show up in the pics. This MBP is my baby as it's my post-production hub that I do everything on.

    I just want another opinion on what it could be...

    Is it something that can be repaired/replaced? Will Apple support it? If so, until when?

  2. BrianBaughn macrumors 603


    Feb 13, 2011
    Baltimore, Maryland
    Take a picture with a camera or smartphone and upload it here.

    Do you have an external monitor you can try for comparison?

    As the MBP has been opened I'm also wondering if it could be a monitor cable or connection issue.
  3. redheeler macrumors 603


    Oct 17, 2014
    Since the lines don't appear in screenshots, the issue is probably related to the display connection cable or the display itself.
  4. TRDGT4Writer, Jun 29, 2017
    Last edited: Jun 29, 2017

    TRDGT4Writer thread starter macrumors regular


    Feb 24, 2014
    Screen with blue line..jpeg
    Here's the picture of the blue line:
    --- Post Merged, Jun 29, 2017 ---
    What's a good USB or Thunderbolt display?

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