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Solved Problem: some pixels are brighter than others

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danielw779

PCHF Member
Sep 23, 2022
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#1
Hello everyone, today I write to you because of a problem that, as I see, nobody on the planet has ever experienced.

The problem is on a basically new monitor, which I bought less than 2 months ago; I noticed this problem recently, but actually I'm not sure if the problem was there since day 1 (I think I would probably have noticed it).

Basically, as you can see from the pictures, there are those 4 pixels which look brigher thant the others.

Searching on the internet I learned that in general we can have dead pixels (completely black pixels, which don't turn on anymore) or stuck pixels (pixels which actually turn on but they display the same color, without changing); however, in this case, those 4 pixels work, and they change their color (depending on the image shown on the screen, of course); so, as far as I know, they are not dead pixels nor stuck pixels.

So, what is this problem? Does anyone of you know it or has ever experienced it? Is it fixable?

As long as you don't notice it, everything looks fine; but, since you notice it, it's very annoying; if you look at it being aware of the fact that it's there, it looks like a sand grain which is impossible to remove.

I hope someone of you can tell me more about this problem, and I really hope it is fixable.
 

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#2
Things to try while waiting for other so comment

Have you tried adjusting the screen brightness to the dimmest and does that change anything?

LCD Dead Pixel Test Backgrounds

A simple test to detect LCD dead pixels. Dead pixels contrast with solid test backgrounds.
jasonfarrell.com

This may also show if the same 4 pixels are affected the same way displaying each of the colors.

If you were to connect to a different machine does the same thing happen?
 
#3
Rustys said:
Have you tried adjusting the screen brightness to the dimmest and does that change anything?
Click to expand...
Not yet. But I can tell that when the image is dark, the problem is almost unnoticeable; when the image is completely black, it's almost impossible to spot it. I should have specified it on the first message. The problem is visible on bright colors only. The darker the color gets, the less visible the problem is.

If you were to connect to a different machine does the same thing happen?
Click to expand...
Yes, the monitor is usually connected to my PS5, but the problem shows even if I connect it to my PC.

Actually, even during the boot-up screen the problem is visible.

This may also show if the same 4 pixels are affected the same way displaying each of the colors.
Click to expand...
I can't do this test on the monitor right now. When I have the chance, in a few hours, I'll let you know. Thank you for the support.
 
#4
you need to read the warranty on the monitor, or talk to their support centre.
at one stage, when LCD's first were becoming mainstream, any dead or faulty pixel was getting the monitor replaced but that started to get too common so they bought on a policy that if the screen showed less then a certain number of faulty pixels and they weren't in the centre area of the screen, they would not replace it.

but that was years ago and I haven't kept up with the latest rules, plus, pixel issues really are rare these days.

RMA'ing it would be my advice. :)
 
#5
Bruce said:
you need to read the warranty on the monitor, or talk to their support centre.
at one stage, when LCD's first were becoming mainstream, any dead or faulty pixel was getting the monitor replaced but that started to get too common so they bought on a policy that if the screen showed less then a certain number of faulty pixels and they weren't in the centre area of the screen, they would not replace it.

but that was years ago and I haven't kept up with the latest rules, plus, pixel issues really are rare these days.

RMA'ing it would be my advice. :)
Click to expand...
Thanks for the answer. Well, it's not a problem that would make me replace my beautiful monitor. I'm just looking for a solution I could make myself, or at least someone who has experienced this problem since if I search on the Internet for this problem it looks like I'm the first human being who has ever had this problem on a monitor.
 
#7
Black and blue and considered to be dark colors for the screen to project.

Only other things I would suggest if put the brightness all the way up then all the way down see if it corrects it that way.

Like Bruce has stated may want to contact the manufacture see if they have any ideas or even look at their forums/FAQ if they gave any.
 
#8
Rustys said:
Black and blue and considered to be dark colors for the screen to project.

Only other things I would suggest if put the brightness all the way up then all the way down see if it corrects it that way.

Like Bruce has stated may want to contact the manufacture see if they have any ideas or even look at their forums/FAQ if they gave any.
Click to expand...
In addition to that, do you recommend launching those "Dead/Stuck pixel fix" videos on YouTube? Do they risk to damage the screen in other ways or make it get worse?
 
#9
@Bruce

No real way of telling have seen that adjusting the brightness get them to reset.

Some have said using dark color for a bit has helped.

Others have stated that it goes away after some use.

As far as damage to the screen do not know it could then again in due time just correct itself.
 
#10
I would have thought, logically, the reason fore the pixel change is those pixels aren't getting the correct current to supply the right RGB balance, so my theory is nothing would help unless that angle is addressed - hance the need for RMA.
plus even if by some black magic you managed to 'fix' it, if it happened once, it can happen again later.

but as said before, it's not an area I've kept up to pace with.
 
#11
Thanks for the answers and for the support. I decided to keep my monitor, as it's a very little problem and the whole RMA procedure is not worth the effort.

Plus, it is most likely a problem due to an error in the manufacturing process of the monitor itself, so with a new unit there would be a risk of similar problems, if not worse. In my opinion, RMA's not worth it in this case.

Thank you for the answers and the support anyway!
 
#13
completely your choice, of course.
and hopefully it all goes well.

the downside with that process is, if everyone took that path, the manufacturer would never know the quality of the product they produce and would falsely believe they make a good unit.
they'll never be wise to any production defects and blindly continue making interferer units.

it may have just been your unit, or all units made that day, or a complete batch of a certain production run, we'll never know, but nor will the company who could look at their paperwork and maybe issue a product recall.
 
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