Hey guys, i recently got this 4k SUHD LG tv.
it is the model SJ850v (also known as SJ8500).

overall it is a very good tv, especially for my gaming needs with low input lag on Game mode.

but the gray uniformity could be better. (has mild clouding on black screens.)

but what really bothers me the most now is, while i was cleaning it abit with a microfibrecloth, i noticed this tiny 1 dot stuck pixel.

it is multi colored (RGB) and i am afraid that this could spread and i would want to avoid that.

is there a chance of it spreading ?

(note : i had my n3ds xl since over 2 years now and it came with a stuck pixel and it did not spread, but tvs are different so i wanted to make sure.)
because the tv is not cheap, paid 1000$ for it.

so if it is not safe to keep it , i will go and replace it.

 

thought so !
thanks for the reply mate.

in case no one was gonna reply i was planning to quote you with your username and a few others i know from here ! XD

good to know that it dont spread, my n3ds xl (i know different screen tech etc.) but the stuck pixel has remained the same over the 2 years and did not spread.

alright buddy, so here's the thing , the LG store from my town (the guys there are very nice) the warranty is legit i guess.
because well, first i bought a model for 850$ and took it home (the model was lg uj650v/or also known as uj6500)

and the panel of that thing was just frikkin awful , the 4k image quality was superb but the panel just straight out awful, terrible gray uniformity ,the blacks looked cloudy grey , i could not bear it.

so i went on ahead and called them told them about it, they said sure you can come swap it with another.
and then so i went on ahead and got this SJ850, the panel is 80% better than the previous one.

the blacks are much more black, very little bit greyish clouds overall.
so overall a very good image quality with very low input lag, so it is ideal for gaming.

but then there was this Stuck pixel !!

i could tell them about it, but i am abit too shy, i might be seen as some sort of annoyance XD


and btw. one more thing, they happen to have 1 lg OLED tv, it is a 4k Oled 55' and costs around the same as the 2nd tv i got now which is the SJ850.
the SJ850 costs 1000$, the oled 1100$.

but well according to him it is not the finest of OLED tv.
and plus it is curved, i am ocd and when i see the curve i come to hate it.

so i am actually torn on what to do, if i go ahead and swap this SJ850 for the same model i maybe might get rid of that stuck pixel, but who know maybe the grey uniformity will not be as good as the one i have right now.

what to do.......

 

yeah but trust me there are even alot of OLED tvs that have terrible grey uniformity , where blacks look grey.

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you must mean those funny looking videos, i will try to run one on youtube from tv.
but i doubt it will get it unstuck.
but worth a try.

 

Hmm, also depends on the recording you play on it.
I've been playing a lot of videos on me phone and Vita and yeh, some videos indeed look greyish.

 

Colors on LCD and OLED should look the same.

I would say exchange it for a new one without the dead pixel. You are paying lots of money for it. So you should get a non defect one.

For an IPS pannel your SJ8500 is in the higher ranking when it comes to back levels.
Though blacks are still not as good as a VA panel. Black uniformity is poor. And Gray uniformity is average.
Usually black uniformity issues is more noticeable on an IPS display but your model had one of the worst.
Turning on Local Dimming can help with some of the uniformity issues but you'll still have some of that blooming.

 

Contrast only mostly matters when your viewing in a dark to pitch black environment.
Viewing content in a brighter room and with reflections with ambient light will make blacks differences less noticeable.

With my LED TV in my room blacks show a bit light seeping through when its pitch black.
But when I turn on the lights or view it in the day time, blacks appear black.

 

Even in daylight, OLED is much more superior.
You can deny it by saying sufficient ambient light will bleed it out but it doesn't change the fact that OLED is superior.

 

damn, now i found another stuck pixel..

there are 2 stuck pixels.
had either not seen or noticed the 2nd one, or it may have just appeared..?

 

You make it sound like stuck pixels are cancer.

 

Do you have the option to view the display before you buy? To power it on and see if it has any stuck pixels.
I guess your going to have to get use to it if you decide to keep it. Just run some more pixel unstick videos.

Here's some information about your models picture quality.
https://www.rtings.com/tv/reviews/lg/sj8500

And calibration settings to get the best picture out of your display.
https://www.rtings.com/tv/reviews/lg/sj8500/settings

When it comes to White balance settings its usually not good to copy other peoples settings.
Since even the same model can give different results. They usually calibrate one display at factory and apply a generic profile to all displays of the same model.
But because parts can vary, even with same model, copying white balance may or may not be accurate. The only way to achieve accurate white balance/accurate colors is to hire a professional or buy a color analyzer meter and do the calibration yourself, rather than copying other peoples settings.

But its usually recommended not to do either because they can be very expensive. And most modern displays have presets that can get you close to accurate colors. And most people wont notice much accuracy difference if you choose the correct preset compared to hiring a professional. Hiring a professional or doing it yourself with a meter is only needed if you want extreme precision. But it wont make a huge difference on modern displays. Just choose right preset, tweak using the recommended settings, and your good to go.