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imac 5k graphics card

  1. jordirobert

    iMac retina 5K line on screen

    Hi there Just 3 weeks after my one year guarantee expired, suddenly this line appeared on my screen (see attachments for picture and my specs). Anyone knows what it may be? My guess is that is a graphics card issue (AMD Radeon R9 M295X) if so, any idea of the cost to replace it? Thank you