I have a dot on my screen that looks a bit like an anti-aliased circle. I took a picture of it:

enter image description here

To me it looks like it's not only one pixel that's dead, but a whole bunch but they're also not completely black.

It's very noticeable on a white background (obviously) and it doesn't really change depending on the foreground. I tried running JScreenFix over it and it didn't help.

It's also visible when the screen is showing a white background due to "no signal".

I got the screen only yesterday (it's an LG 27UD58), should I take it back or is there a way to fix this myself?

Thanks for your help!

  • related but not an exact dupe - superuser.com/questions/889262/…
    – Tetsujin
    Jan 6, 2019 at 13:15
  • 1
    It looks more like an tiny LED backlight has died rather than an LCD pixel. either that or there is a bit of dirt/debris behind the LCD layer.
    – Mokubai
    Jan 6, 2019 at 13:19
  • tbh, without any other visual clues, it's hard to tell whether the dot is smooth or the picture is out of focus.
    – Tetsujin
    Jan 6, 2019 at 13:46
  • 1
    As it's a new display I would take it back and exchange it.
    – DavidPostill
    Jan 6, 2019 at 13:53

1 Answer 1


This is dust between LCD screen and backlight plane.

The grid pattern shown in the picture actually shows the pixels, so the dark spot is much larger than a pixel. Also, pixels are squared, not round.

This also can't be a defect LED as stated in the comment, because the spot still is very small and has quite sharp borders. How many LEDs should the display have, and how to lit the display evenly, if a single LED would lit only such a small area with that borders?

My display is full of such spots. Some are circles, some look more like a small hair, or even a bunch of fibers. This is dust.

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .