Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

I have a Samsung NP550P5C laptop with a problem on the display I've never seen before: it has a 2x2 pixel area that is considerably brighter than the rest of the screen area. Here's a closeup:

closeup of bright spot

The pixels work otherwise fine and are not stuck at white. If I adjust screen brightness, the spot gets brighter too. If the spot is on a dark area it's completely unnoticeable. It's a LED backlit panel - are the LEDs really that small?

What could cause this problem and is there some way to fix it? The laptop is still in warranty but I know they will just give me a new one in exchange and that means more hassle with the software installations and all than I'm ready to go through for such a small, albeit annoying problem.

Edit: I did the suggested test with the Chrome extension, here's what the bright area looks like on other colors.

bright pixels on red, green, blue, black

share|improve this question
    
The LEDs aren't that small, and are also on the sides of the display panel, not behind it. It could be a defect in the diffusor that spreads the light from the LEDs across the display panel, but that usually results in much larger spots. –  Indrek Sep 5 '12 at 12:42
add comment

3 Answers

Here's a few things you can try:

  1. Try tapping the screen (gently) where you see the dead pixels.
  2. This Chrome extension can help verify whether you're dealing with dead/stuck pixels.
  3. Jscreen Fix can sometimes re-energize stuck pixels, as well as remove burn-in from LCD and plasma screens.
share|improve this answer
    
Thanks for the suggestions, gentle tapping didn't help. I updated my question with closeups of the bright area while using the Chrome extension. –  Kaivosukeltaja Sep 5 '12 at 13:37
add comment

this are no dead pixel, this is a damage in the diffusion foil behind the lcd! in most cases mechanical pressure is the reason, and there is no other chance as to change the screen to get rid of it...

share|improve this answer
add comment

You have a few dead / stuck pixels (assuming this occurs on the screen when any program is run). This used to be very common on LCD screens (maybe it still is).

As for taking it back, you'll have to see. I've had experience where, due to how common this is, the manufacturer didn't take it back and even showed me where in their terms it actually states that dead pixels is not covered in the warranty.

There are a few suggestions here, but sadly so many are picture based I can't copy the answer here although a Google search for 'fixing dead stuck pixels' will probably help.

share|improve this answer
    
I've had devices with both dead and stuck pixels before, these are different in that they change color as expected - they are just a bit brighter than they should be. –  Kaivosukeltaja Sep 5 '12 at 12:44
1  
Most manufacturers have a very specific policy with regards to dead pixels. It can be as simple as a minimum number of pixels that they'll accept as a display defect, or the policy might vary depending on the computer/monitor model, display resolution, whether the pixels are stuck as on or off, or even the distance between individual dead pixels. I'd be interested in knowing which manufacturer(s) refuse to cover dead pixels completely. –  Indrek Sep 5 '12 at 12:46
    
This was a while ago and to be honest it was the shop! I remember having to really fight and they made it really clear they'd swap it but it would be tough if the next had a fault. The shop was John Lewis the manufacturer was LG. –  Dave Rook Sep 5 '12 at 12:49
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.