No display

Discussion in 'MacBook Pro' started by Lysak, Feb 13, 2016.

  1. Lysak macrumors newbie

    Lysak

    Joined:
    Feb 13, 2016
    #1
    hi guys, hoping to find some answers here. I have a 2010 17" MacBook Pro that operates fine but has no display. I can display onto a tv and works great, checked all my connections on the boards to the display and they all seem fine.
    Now, here's the weird thing, if I put a light behind the display by the apple logo, I can just see my desk top in the centre of the screen from the light coming through. See attached image.

    Ideas what this is? Thanks in advance for any help!
     

    Attached Files:

  2. iMacDragon macrumors 65816

    iMacDragon

    Joined:
    Oct 18, 2008
    Location:
    UK
    #2
    The inverter for the backlight has probably failed.
     
  3. Lysak thread starter macrumors newbie

    Lysak

    Joined:
    Feb 13, 2016
    #3
    Thanks Dragon, I did a search and it seems there isn't one for this model (A1297). Something I am missing? Thanks
     
  4. iMacDragon macrumors 65816

    iMacDragon

    Joined:
    Oct 18, 2008
    Location:
    UK
    #4
    Hmm, actually, those had switched to LED already, so they probably don't have an inverter as such anymore. It's certainly something with the backlight circuit that's failed though, but by looks of it it's just a single cable servicing the LCD so not sure if much can be done without replacing whole display panel as one unit, other than trying to reseat cable.
     
  5. Lysak thread starter macrumors newbie

    Lysak

    Joined:
    Feb 13, 2016
    #5
    --- Post Merged, Feb 13, 2016 ---
    Yea that's what I kinda thought. I did have the panel off this morning and yes just the LVCD cable on the right and ransoms on the left.

    I do have another A1297 for parts but oddly the display cables are different. I was really hoping to just swap the panels, but ughh! I have posted the two models below of the display wiring. The LVCD cables are both good to swap but the others below are not. The bottom image is just the panel with a direct connection to the board. The top image connection is like it Hassan jumper connection the board over the optical drive.
    Thoughts on using this panel? image.jpeg image.jpeg
     
  6. DeltaMac macrumors 604

    DeltaMac

    Joined:
    Jul 30, 2003
    Location:
    Delaware
    #6
    If you see your screen elements (menus, icons, etc) dimly, then the backlight is not working (and I think you already know that :D )
    Have you tried a PRAM reset?
    Have you checked that the screen brightness controls are adjusted (both in the Displays pref pane, and f1 or f2 on the keyboard) to see if that makes any difference?
    If you can't get any change in brightness (not even a momentary flash during boot), you have already (apparently) checked the logic board connectors. That probably means that a fuse (F9800) on the logic board has blown.
    Fuses don't fail by themselves - so, it's likely the display will need to be replaced (something shorted in the display cabling) and the logic board will also need to be replaced (unless you are lucky enough to have the skills and equipment to replace the blown fuse, or get the board repaired at a business that does such repairs.
    Quite a job, and a lot of effort (and a fair amount of cash) to repair a 6 year-old laptop, but that's up to you, I suppose.
     

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