Screen Anomaly

Discussion in 'MacBook Pro' started by vermontmacs, Apr 27, 2013.

  1. vermontmacs macrumors newbie

    Joined:
    Feb 1, 2012
    #1
    Hi guys,

    Seeking opinions/insight regarding a screen issue with a 15" 2007 MBP A1226.
    Internal screen shows desktop with all artifacts but is laced with numerous horizontal lines. External screen is fine with a bright clear desktop. Internal screen used is a known good unit as tested in two other A1226s. Each time I test the A1226 in question, I swap out the HD, RAM and IO power board from one of the other A1226s. I restore macs for a living so have several machines at my disposal for diagnostics. The solution/cause may be obvious but escapes me. I'm thinking the suspect A1226 has a faulty MOBO but what's wrong when an external indicates a healthy graphics system. Any ideas would be greatly appreciated.
    Rob
     
  2. thundersteele macrumors 68030

    Joined:
    Oct 19, 2011
    Location:
    Switzerland
    #2
    It's one of the models with the 8600 GPU, right? It indicates an unhealthy graphics system... its just not completely dead yet.
     

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