How to test the screen

Discussion in 'MacBook Pro' started by 50L, Oct 19, 2014.

  1. 50L macrumors regular


    Mar 2, 2014
    this is probably a stupid question with no possible answer :

    I have a water-damaged machine. it's still starting up with heavy fan sound and no screen, when I plug it to my TV with HDMI there's still no signal.

    Does it mean that my screen is completely dead or is it a big chance it's only a problem with my graphic card, and how can i check that?
  2. maflynn Moderator


    Staff Member

    May 3, 2009
    If you're not getting any signal from the HDMI port, then its not just the screen that is damaged, but the logic board. Typically if a laptop incurs water damage the screen is usually not the component that shorts out, but the logic board.

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