Apple Cinema Display, recognised but no output

Discussion in 'Mac Accessories' started by rogan, Nov 13, 2012.

  1. rogan macrumors regular

    Sep 13, 2009
    Hi Guys looking for possible issues

    I have a 24" cinema display that one day popped the screen went off work bought a new one and it'd been in a box for a year

    I decided nows a good time to try and fix it,

    I plug it in to my iMac and its recognsied as a cinema display, i can drag windows to the screen and i can use the iSight but theres no display on the screen, no blacklight no view nothing

    Anyone know what might be wrong?
  2. MCAsan macrumors 601


    Jul 9, 2012
    one possibility: backlight source (lamp or led) is gone
  3. CWallace macrumors 603


    Aug 17, 2007
    Seattle, WA
    If you move windows to the ACD and then shine a flashlight on it, do you see anything?

    If you do, then as MCAsan suggests, the backlight might have failed. If you do not, then it could be a failure in the circuitry that drives the LCD.
  4. blueyesdevil macrumors newbie

    Jan 5, 2013
    Sorry for reviving an old thread but I'm having the same issue.

    The display is a 24 inch cinema led display and everything works but the

    If I shine on the screen with a light I can see the display working.

    What would fix this? Is a logic board replacement needed or a display replacement?
  5. AnonMac50 macrumors 65816

    Mar 24, 2010
    Your display will have to be repaired.
  6. blueyesdevil macrumors newbie

    Jan 5, 2013
    So the actual LCD needs a complete replacement? I was hoping it wasn't that
    because those cost from 500 to 900 $.

    I'm still going to open the display and do some voltage and connection tests.
  7. AnonMac50 macrumors 65816

    Mar 24, 2010
    Not the WHOLE thing. I'm not sure what boards there are inside the display but you may need a new logic board.
  8. ljonesj macrumors 6502a


    Oct 20, 2009
    Kingsport TN
    not nescaraliy my moms laptop lcd the inverter board went out in it for backlight so you could see if there is a small control board that connects the light to the rest of the monitor
  9. blueyesdevil macrumors newbie

    Jan 5, 2013
    I will definitely open up the screen to see what is wrong and check out the
    led driver connections/logic.

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