OLED Screen Uniformity Discussion-Banding and Vignetting - Page 222 - AVS Forum | Home Theater Discussions And Reviews
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post #6631 of 8433 Old 01-11-2019, 07:02 AM
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Originally Posted by guitarguy316 View Post
Imo if it’s visible on that then it would be in content so I’d try an exchange or return if you can.
Thank you, just needed someone to confirm my own thoughts really. Now the fun of dealing with Currys. We're off to a flying start as they have already let me down on a collection date.
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post #6632 of 8433 Old 01-11-2019, 08:50 AM
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The same happens with me after the first manual pixelrefresher on my A1 (the one the TV reminds u after 2000 or so hours). And i also see that in other solid color panning shots. It dont have to be grey.
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post #6633 of 8433 Old 01-11-2019, 09:26 AM
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Originally Posted by Danic99 View Post
The same happens with me after the first manual pixelrefresher on my A1 (the one the TV reminds u after 2000 or so hours). And i also see that in other solid color panning shots. It dont have to be grey.
Interesting, so to you, my set is normal then?
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post #6634 of 8433 Old 01-11-2019, 10:24 AM
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Originally Posted by Danic99 View Post
The same happens with me after the first manual pixelrefresher on my A1 (the one the TV reminds u after 2000 or so hours). And i also see that in other solid color panning shots. It dont have to be grey.
Interesting, so to you, my set is normal then?
OFC not, im fighting with Sony since weeks cause its obviously pretty annoying in real content.
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post #6635 of 8433 Old 01-11-2019, 04:41 PM
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Does anyone know how to contact direct technical support of lg ? I tried to prevent them on twitter or some specialized guys but get no response about the oval shape
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post #6636 of 8433 Old 01-11-2019, 05:50 PM
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LG 55B8 - 10 hours - at least 2 complete cycle of pixel refresh

ISF Dark
OLED 35
Contrast 85
Brightness 50

Attached files: 5% and 10% grey + Prime Video

I have to contact customer care to change my panel?
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post #6637 of 8433 Old 01-12-2019, 01:16 AM
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Originally Posted by Danic99 View Post
OFC not, im fighting with Sony since weeks cause its obviously pretty annoying in real content.
Ah OK, sorry. Its just it's a grey area, no pun intended as views seem to vary as to what is acceptable or not when it comes to banding. Mine is due to be picked up today. I'll let you know how it goes. But I posted in another enthusiast forum and someone with identical issue had their panel replaced by Currys, so I am at least hopeful of a resolution. We'll see.
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post #6638 of 8433 Old 01-12-2019, 03:44 AM
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Quote:
Originally Posted by Irrequieto View Post
LG 55B8 - 10 hours - at least 2 complete cycle of pixel refresh

ISF Dark
OLED 35
Contrast 85
Brightness 50

Attached files: 5% and 10% grey + Prime Video

I have to contact customer care to change my panel?
No, you have to wait and see. It's much too early to judge after 10 hours.

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post #6639 of 8433 Old 01-12-2019, 04:22 AM
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Originally Posted by Irrequieto View Post
LG 55B8 - 10 hours - at least 2 complete cycle of pixel refresh

ISF Dark
OLED 35
Contrast 85
Brightness 50

Attached files: 5% and 10% grey + Prime Video

I have to contact customer care to change my panel?
This looks good to me. I would be happy to have such a panel. Do you see it in real content?!
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post #6640 of 8433 Old 01-12-2019, 05:41 AM
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Originally Posted by Danic99 View Post
This looks good to me. I would be happy to have such a panel. Do you see it in real content?!
No banding at all, i notice in very dark scenes (1%-5% grey). Pixel refresher it's dangerous? I have to run more than 3 times or i have to wait on normal use? Don't know if the process can be dangerous for panel!
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post #6641 of 8433 Old 01-12-2019, 07:48 AM
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Originally Posted by Irrequieto View Post
Quote:
Originally Posted by Danic99 View Post
This looks good to me. I would be happy to have such a panel. Do you see it in real content?!
No banding at all, i notice in very dark scenes (1%-5% grey). Pixel refresher it's dangerous? I have to run more than 3 times or i have to wait on normal use? Don't know if the process can be dangerous for panel!
Do not use it. Guess the auto cycles will clean it even more in the beginning.
In the manual from my A1 Sony even states to use the Pixelrefresher only once a year.
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post #6642 of 8433 Old 01-12-2019, 10:33 AM
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Originally Posted by Danic99 View Post
Do not use it. Guess the auto cycles will clean it even more in the beginning.
In the manual from my A1 Sony even states to use the Pixelrefresher only once a year.
That’s Sony being over cautious, if you could do damage all manufactures would state the same thing.
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post #6643 of 8433 Old 01-12-2019, 10:54 AM
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Following up from my last post, after a couple hundred hours, things are starting to clean up and look *a little* better..

The left band was noticeable in real content yesterday, which had me up late looking at grey slides again, ha.


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post #6644 of 8433 Old 01-12-2019, 05:34 PM
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Hi,


I am seeking some help. I bought a 55B8 in October with bad uniformity, left side was grey compared to the rest of the TV, and got a replacement panel in December with the same issue. So I attached the pictures from both panels.
The brightness is set a default 50 and even so the issue can be seen clearly from my camera phone picture. Ofc in reality is worse.
So now LG told me to return the TV. I would go for another OLED but I just see that way to many people have this issues. Even the LG engineer told me I got a replacement and negation amazingly fast so LG is aware that is a general problem.

I am considering the Q9FN, atm is in the same price range. I heard it's pretty good and the fact the stutter is less visible is an advantage.

So, should I keep on playing the lottery or just go for the Q9FN?
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post #6645 of 8433 Old 01-12-2019, 10:48 PM
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ISF Dark @ 35 OLED / 85 Contrast / 50 Brightness


I'm a few months before the end of my warranty, sitting at 1950 hours and wondering if I should bother trying to get a replacement panel from LG. During stress test scenes vertical banding is pretty visible, worse during pans. Just not sure if I should try for a replacement after this long and risk ending up with a worse panel, but I'm not sure how mine compares to best/worst cases here. Any advice would be appreciated.



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post #6646 of 8433 Old 01-12-2019, 11:09 PM
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Sorry for the double post, don't see a way to edit my first one. I forgot to mention the above picture is of a 55-inch C7.
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post #6647 of 8433 Old 01-13-2019, 07:30 AM
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@Travis Stockton Can you post some real scene pics? If it's not that bad I ll say keep it. You might get one like mine with brightness issues or worse banding. As far as I see most users are pleased with less issues not with perfect ones.
In my opinion it's risky to gamble with another one. But as you can see in my post I too don't know what to do exactly.
Now I am not sure but I think if you'll change it you'll get extra warranty on the new panel, and in this case is another story.
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post #6648 of 8433 Old 01-13-2019, 11:49 AM
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Quote:
Originally Posted by Cristian Pavel View Post
Hi,


I am seeking some help. I bought a 55B8 in October with bad uniformity, left side was grey compared to the rest of the TV, and got a replacement panel in December with the same issue. So I attached the pictures from both panels.
The brightness is set a default 50 and even so the issue can be seen clearly from my camera phone picture. Ofc in reality is worse.
So now LG told me to return the TV. I would go for another OLED but I just see that way to many people have this issues. Even the LG engineer told me I got a replacement and negation amazingly fast so LG is aware that is a general problem.

I am considering the Q9FN, atm is in the same price range. I heard it's pretty good and the fact the stutter is less visible is an advantage.

So, should I keep on playing the lottery or just go for the Q9FN?
If you do a quick search, you'll see that LCD's come with their own set of issues, and you'll be playing that lottery. Whether you want to go QLED or get another OLED is up to you, but glancing at the couple photos you posted, that doesn't look like it'll improve with time.
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post #6649 of 8433 Old 01-13-2019, 01:26 PM
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Originally Posted by Cristian Pavel View Post
Can you post some real scene pics? If it's not that bad I ll say keep it. You might get one like mine with brightness issues or worse banding. As far as I see most users are pleased with less issues not with perfect ones.
In my opinion it's risky to gamble with another one. But as you can see in my post I too don't know what to do exactly.
Now I am not sure but I think if you'll change it you'll get extra warranty on the new panel, and in this case is another story.
I tried to take some last night but the camera on my Nexus 6 is so awful, minimizing light in the room and taking a picture puts so much noise in the image (as you can see from the 5% test image) that you can't really see the bars in real content. I'll try again tonight and let a bit more light into the room. It's mostly visible when images are in motion, oddly enough the worst band is a thicker one on the far right but I never see that one on playback. It's all the smaller "jail bar" ones near the middle and left of the screen that I see most.
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post #6650 of 8433 Old 01-13-2019, 04:41 PM
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Are people over exposing their pics? With ISF Dark @ 35 OLED / 85 Contrast / 50 Brightness / 2.2 gamma, dark room, I can hardly see anything on the 5% slide on my 65B7
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post #6651 of 8433 Old 01-14-2019, 11:59 AM
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What do you guys think of my C8, now after I've used it quite a few hours more? Acceptable?

Skickat från min SM-N950F via Tapatalk
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post #6652 of 8433 Old 01-14-2019, 12:18 PM
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What do you guys think of my C8, now after I've used it quite a few hours more? Acceptable?

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post #6653 of 8433 Old 01-14-2019, 12:24 PM
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It's a beauty!


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Some of the details of the banding is hard to see in those photos, probably easier to see here: https://imgur.com/a/GhGRcTR

All in all a lot better then my previous panel, banding only really distracting in more or less torture scenes (Mindhunter, panning and/or dark grey scenes etc)

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post #6654 of 8433 Old 01-14-2019, 01:20 PM
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Are people over exposing their pics? With ISF Dark @ 35 OLED / 85 Contrast / 50 Brightness / 2.2 gamma, dark room, I can hardly see anything on the 5% slide on my 65B7

One thing people forget when making these 5% slide comparisons is how much the low end varies on these oled panels.

Now that I have a meter I measured mine at default settings oled-light 35, contrast 85, BT.1886 on a 5% slide @ 0.046 nits while it actually should be twice that.
So basically my panel on a 5% slide is darker than a proper one at 4% and that is while putting the meter on one of the brighter spots.

Without some basic calibration to make sure the slides are displayed at the correct luminance, these comparisons are somewhat meaningless.

My first panel was much brighter on 5% slide but I didn't have a meter back then, it might have been even too bright.


Of course camera type and settings play a huge role too.
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post #6655 of 8433 Old 01-15-2019, 02:54 AM
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Originally Posted by Irrequieto View Post
LG 55B8 - 10 hours - at least 2 complete cycle of pixel refresh

ISF Dark
OLED 35
Contrast 85
Brightness 50

Attached files: 5% and 10% grey + Prime Video

I have to contact customer care to change my panel?
I have this same defective panel on my C8 after +400hours. The pattern looks almost identical. LG customer care service sent a tech last week to take pictures of the built in test patterns (accessible via the service remote control). These patterns are just too bright or irrelevant (black, red, blue, green, 50% gray slides) to highlight the defect and they won't take into account the 5%-20% grey patterns "you can find on Internet"...


Anyway, it has been concluded my panel is on LG specifications. There is nothing much I can do about it (they denied to open a new support ticket).


I just finished the Harry Potter saga and it was really painful to watch...


Pictures attached : 5% gray, 10% gray, Youtube menu, Speedtest menu
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post #6656 of 8433 Old 01-15-2019, 03:10 AM - Thread Starter
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I have this same defective panel on my C8 after +400hours. The pattern looks almost identical. LG customer care service sent a tech last week to take pictures of the built in test patterns (accessible via the service remote control). These patterns are just too bright or irrelevant (black, red, blue, green, 50% gray slides) to highlight the defect and they won't take into account the 5%-20% grey patterns "you can find on Internet"...


Anyway, it has been concluded my panel is on LG specifications. There is nothing much I can do about it (they denied to open a new support ticket).


I just finished the Harry Potter saga and it was really painful to watch...


Pictures attached : 5% gray, 10% gray, Youtube menu, Speedtest menu
No panel is perfect. Sorry that you’re getting screwed, but I’d still bust their chops for a new panel.
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post #6657 of 8433 Old 01-15-2019, 10:18 AM
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Hi, I have my 65B7 since August 2018. Noticed banding, but decided to keep it. Unfortunately, as things, go, the more content I watch, the more I am looking for it. Anyway, I wanted to share my case and ask for opinion.

BTW, LG in Poland told me this doesn't qualify for any replacement/repair.
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post #6658 of 8433 Old 01-15-2019, 10:21 AM - Thread Starter
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Hi, I have my 65B7 since August 2018. Noticed banding, but decided to keep it. Unfortunately, as things, go, the more content I watch, the more I am looking for it. Anyway, I wanted to share my case and ask for opinion.

BTW, LG in Poland told me this doesn't qualify for any replacement/repair.
Looks similar to my A1E. Keep it because you could do worse...unfortunately.

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post #6659 of 8433 Old 01-15-2019, 11:18 AM
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Quote:
Originally Posted by stoufy View Post
I have this same defective panel on my C8 after +400hours. The pattern looks almost identical. LG customer care service sent a tech last week to take pictures of the built in test patterns (accessible via the service remote control). These patterns are just too bright or irrelevant (black, red, blue, green, 50% gray slides) to highlight the defect and they won't take into account the 5%-20% grey patterns "you can find on Internet"...
They are lying. The grey patterns are also BUILT INTO THE TV!!! Their own TV!

I would suggest go to your retailer. This is not an LG warranty issue - it's a faulty TV which should not have left the factory.

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post #6660 of 8433 Old 01-16-2019, 01:39 AM
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They are lying. The grey patterns are also BUILT INTO THE TV!!! Their own TV!

I would suggest go to your retailer. This is not an LG warranty issue - it's a faulty TV which should not have left the factory.

Interesting... Do you know if the built-in grey patterns go below 20% (on a C8) ? If so, I will order a master service remote control and try my best to take things further.


I bought this TV on an online retailer. They told me they couldn't do anything about it and that I had to deal with LG... ¯\_(ツ)_/¯
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