20" ACD Image persistence and darkening patch.

Discussion in 'Mac Accessories' started by Noscreen, Oct 29, 2011.

  1. Noscreen macrumors newbie

    Oct 29, 2011
    Hello, and first let me say hello to all of you at MacRumors, I've lurked here for a while and I've finally made my account!

    To start off, sadly, I have a very annoying and apparently very elusive problem with my 20" aluminum ACD. I've looked all over to try and find even someone with the same issue but I've had no luck at all.

    So, about a week ago I started noticing a patch of dark/discolored area at the top of my display. It's possible that the affected area is growing, but if it is, it's very slow. This darkening is there from the moment I turn the screen on and does not seem to worsen with temperature. It only affects dark colors! It is not at all noticeable when displaying bright colors, and it does not seem to matter which specific color it's showing, only the brightness of said color. Here's a couple of iPhone photos showing this: (Look at the top of the display)

    http://i.imgur.com/2HIaU.jpg (Dark Yellow)
    http://i.imgur.com/lYq56.jpg (Bright Yellow)

    Not the best photos in the world, but they do show the problem. Ignore the greeny color in the middle of the screen, that's just the camera auto adjusting.

    In addition to this, I'm also getting some troubles with image persistence in the exact same area! I opened WoW because the map frame is in a good position to demonstrate this. Here's a couple more pictures showing the persistent image generated from only 20 minutes of static picture.

    http://i.imgur.com/l9BBt.jpg (The image being displayed)
    http://i.imgur.com/wBKRR.jpg (The persistent image on a grey background after 20 minutes)

    It stays like this for at least an hour if not more. Note that outside the darkened area there is no image persistence at all, and that the affected area is very well defined and specific.

    A couple of last things to note are that the backlight level does not seem to affect this problem at all, and before about a week ago this display was otherwise perfect.

    Any insights as to why this might be happening, how to prevent it happening on other monitors, and how I might go about getting it fixed would be very helpful!

    Thanks in advance,
    Noscreen :)
  2. Noscreen thread starter macrumors newbie

    Oct 29, 2011
    I'm just going to bump this once, as I still have no resolution to this problem.

Share This Page