LG 55EA9800 55" OLED Owner's thread - Page 97 - AVS Forum
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OLED Technology and Flat Panels General > LG 55EA9800 55" OLED Owner's thread
fafrd's Avatar fafrd 04:05 PM 05-14-2014
Quote:
Originally Posted by coopson View Post

Whenever my sets off for a little while I can see motherboard imprint on grey but after its been on for 5 minutes its nowhere near as bad.

Your heat theory is not so bad. It makes sense that areas of the screen where the WOLEDs are being driven will consume more power and hence generate more heat than areas of the screen that are left off (the letterbox bars) and it also makes sense that areas of the screen with a large heat-mass directly behind them (the area directly n front of the motherboard) will be slower to heat up than areas of the screen that don't have that heat mass.

In both cases, the theory would be that cooler portions of the screen appear slightly lighter than hotter portions of the screen - consistent with what you are experience both during post-letterbox uniformity and initial turn-on uniformity, correct?

Transistor threshold voltages have a temperature dependency and a temporary heat-related effect could explain at least some of the non-uniformity that is being experienced.

Vegas oled's Avatar Vegas oled 07:07 PM 05-14-2014
OMG, watching the. Yankees-Mets game on the OLED, I don't think I could ever give this up, baseball never looked this good. biggrin.gif
Cleveland Plasma's Avatar Cleveland Plasma 07:12 PM 05-14-2014
Quote:
Originally Posted by Theplague13 View Post

I simply find it impossible to take anyone seriously who thinks televisions are that consequential. Obviously we all enjoy AV gear and technology in general but he takes it a thousand steps too far. .
What is the normal here for AVS then, 250 steps to far compared to normal ? biggrin.gif
Quote:
Originally Posted by fafrd View Post

So spend less. The Toshiba L7400U can be had for under $1000 and if you need larger, the 65" Vizio M Series is $1500...
At that point I would by the Samsung PN64H5000, I know that unit will be better than the above, I bet .........
JimP 07:23 PM 05-14-2014
Quote:
Originally Posted by fafrd View Post

Your heat theory I snot so bad. .....

Well take an antihistamine. biggrin.gif
fafrd's Avatar fafrd 07:27 PM 05-14-2014
Quote:
Originally Posted by JimP View Post

Quote:
Originally Posted by fafrd View Post

Your heat theory I snot so bad. .....

Well take an antihistamine. biggrin.gif

There have been so many ups and abrupt down in this OLED rollercoaster, my nose has started to run eek.gif
coopson's Avatar coopson 07:32 PM 05-14-2014
My heat theory would seem to work for me but Theplague13 cant seem to shift his doing the same thing so maybe not.

Maybe because mines new its getting IR faster and losing it faster but my screen is losing this IR best with the set turned off.
fafrd's Avatar fafrd 07:53 PM 05-14-2014
Quote:
Originally Posted by coopson View Post

My heat theory would seem to work for me but Theplague13 cant seem to shift his doing the same thing so maybe not.

Maybe because mines new its getting IR faster and losing it faster but my screen is losing this IR best with the set turned off.

It's entirely possible that thee are two or even more issues that cause the same effect in terms of apparent IR/BI/non-uniform greyscale

I hope you get to watch a LOTR widescreen marathon before you have to return your panel - confirming that you are seeing exactly some of the same effects that Plague has reported would be valuable.
coopson's Avatar coopson 08:04 PM 05-14-2014
I've already watched the LOTR this year even tho they are good movies I wont be watching them again for a while they've not phoned me back and told me when I'll be getting my new TV yet it wont be this week so at some point I'll have to leave it on letter box movies for a good 6 hours and see if I can shift it.
vinnie97's Avatar vinnie97 08:48 PM 05-14-2014
Quote:
Originally Posted by Theplague13 View Post

Well I'm not using a pixel flipper to diminish it but s pure white slide , followed MAYBE if it didn't come out good a short burst of the "jogger" which is similar.

My fears aren't even close to relieved. I'm not going to speak for them but I don't think vinnie or coopsons are either..

Every time I get wear st the very least I'm left with a line. One which may compound until it spills over into real content, as it already had on my first panel. Vinnie had a kuro and said it resembled 2000 hours on that, plus a zt60 which he never mentions IR on, all the while discussing this.
Oh, the ZT has suffered IR for sure, but it relates to high-contrast logos or longstanding graphics (i.e. scoreboards) most typically. It doesn't have a noticeable letterbox problem, but I'm sure it would show up over the course of time if I watched a majority of letterbox movies, probably not too dissimilar from the Kuro.

Next time I see the OLED letterbox unevenness on gray (or in regular content), I'll try Coops' method because I haven't yet.
Masterbrew2's Avatar Masterbrew2 12:10 AM 05-15-2014
Quote:
Originally Posted by coopson View Post

1hour into American hustle stopped to get a drink and take dog out that's been hounding me, took a picture before I took the dog out then turned TV off.



Then this is what it looks like after the TV was off for about 15mins now going back to the movie.

 

Coopson, you are doing great work! We are learning a lot about the different ways IR can manifest thanks to you.

 

Since the motherboard will also show itself just after turning on, the temporary IR seems to be heat-related


Masterbrew2's Avatar Masterbrew2 12:11 AM 05-15-2014
Quote:
Originally Posted by Theplague13 View Post


They say this one does but I can't notice....what types of games do you play Vak?

That 4k Samsung has quite a bit more like 90-100ms


Theplague13's Avatar Theplague13 07:27 AM 05-15-2014
Quote:
Originally Posted by vinnie97 View Post

Oh, the ZT has suffered IR for sure, but it relates to high-contrast logos or longstanding graphics (i.e. scoreboards) most typically. It doesn't have a noticeable letterbox problem, but I'm sure it would show up over the course of time if I watched a majority of letterbox movies, probably not too dissimilar from the Kuro.

Next time I see the OLED letterbox unevenness on gray (or in regular content), I'll try Coops' method because I haven't yet.

In essence I was asking if you'd say this problem is much more delicate and concerning on the OLED than those tv's because it seemed so
Theplague13's Avatar Theplague13 07:30 AM 05-15-2014
Coopson- the theory you're proposing is to turn the tv off right after the wear happens? I haven't done exactly that, what I meant was that the tv's been off for a few days since the wear at some point
Artwood's Avatar Artwood 08:58 AM 05-15-2014
Do all OLEDs have the proceeding IR problems or just some of them?
coopson's Avatar coopson 09:13 AM 05-15-2014
Quote:
Originally Posted by Artwood View Post

Do all OLEDs have the proceeding IR problems or just some of them?


I would say all have it what are the chances that the 3 people that are checking are seeing it.

Theplague13 if I was right you wouldn't have to do it right away having the set off would always get rid of it if it was from the heat.

I'm not saying for sure it is heat thats curseing the IR iI'm going to hammer some letter box movies before it goes back and see if the IR still goes away.

Wrote this on my mobile so if it makes no sense you know why.
vinnie97's Avatar vinnie97 09:52 AM 05-15-2014
^Clear as a bell. The good news is LOTR EE on my set (12 hours) was able to virtually be erased with a white slide (the color slides were much less efficacious, and I also didn't let the panel rest before application).

Plague, I've seen some stubbornness on the ZT, yes, but nothing as noticeable as what I've seen on the OLED with letterbox.
tgm1024's Avatar tgm1024 10:00 AM 05-15-2014

Curious: Vin, Plague, and Coop, what are you leaning toward doing now?


vinnie97's Avatar vinnie97 10:08 AM 05-15-2014
Pretty sure Coop has another TV to try before rendering a final verdict. wink.gif I'm stuck unless I raise a hell of a conniption fit with LG. That would be insincere of me. For the moment, I'm contented.
greenland's Avatar greenland 10:26 AM 05-15-2014
Has any new owner tried setting the contrast and light levels very low from the outset for a couple of hundred hours before raising them to normal standards, and ran only break in slides, to prep the sets? I wonder if that might make a difference. Plasma phosphors are most susceptible to IR at the outset. Has it been fully established that OLED is not?
tgm1024's Avatar tgm1024 10:33 AM 05-15-2014
Quote:
Originally Posted by greenland View Post

Has any new owner tried setting the contrast and light levels very low from the outset for a couple of hundred hours before raising them to normal standards, and ran only break in slides, to prep the sets? I wonder if that might make a difference. Plasma phosphors are most susceptible to IR at the outset. Has it been fully established that OLED is not?

 

Can't say at what contrast, but Vin ran 300 hours of prep slides.  Patient dude that he is.


vinnie97's Avatar vinnie97 10:42 AM 05-15-2014
Suffice to say, I don't remember the contrast setting (I probably didn't set it particularly low), and I also interspersed it with the occasional full-screen content. D-Nice actually instructs Panasonic Viera 2013 owners to use the default custom settings (which has the contrast at 100) for break-in. Given the similar behavior of this unevenness appearing in sets both OOTB and at 400+ hours, I don't think it makes much difference if the issue is emanating from heat variances.
greenland's Avatar greenland 10:48 AM 05-15-2014
Quote:
Originally Posted by vinnie97 View Post

Suffice to say, I don't remember the contrast setting (I probably didn't set it particularly low), and I also interspersed it with the occasional full-screen content. D-Nice actually instructs Panasonic Viera 2013 owners to use the default custom settings (which has the contrast at 100) for break-in. Given the similar behavior of this unevenness appearing in sets both OOTB and at 400+ hours, I don't think it makes much difference if the issue is emanating from heat variances.

Well if my ship ever comes in I will buy an Ultra Rez OLED and break it in first like I have all of my Plasma sets, just to determine if it does make any difference or not. Of course; with my luck, my ship will come in the day I am at the airport instead!
vinnie97's Avatar vinnie97 10:58 AM 05-15-2014
One of those would be way, way in my future at this point. I foolishly grabbed this since I am not patient in all things. The break-in period wasn't a particularly trying test of my patience since I had a good performer in the great room. wink.gif

My ship is just over the horizon, but with my luck, it will hit an unforeseen boulder before it reaches harbor. wink.gif
coopson's Avatar coopson 12:03 PM 05-15-2014
Well checking my grey today and i can see a line that looks like its from 4:3 content i only remember watching about 15 minutes of 4:3 content so don't know how that's got there there still a faint line from the letter box too.



Here the same picture with me highlighting the lines.

coopson's Avatar coopson 12:09 PM 05-15-2014
If the IR/Burn in just leaves these lines then I could live with that as there are many lines I can see on grey that don't show up at all on real content it's just is it going to get worse and worse until it starts showing up on lighter greys and whites ?

TV been off all day while I've been at work too and these lines were still there so I still think heat might make the black bars lighter then the middle but these lines are IR/burn in.
vinnie97's Avatar vinnie97 12:11 PM 05-15-2014
I see some curious lines in my grayscale also, even vertical, and I haven't watched *any* 4:3 content. It's just a part of the murky grays/greys that this set is known to produce.
vaktmestern's Avatar vaktmestern 12:15 PM 05-15-2014
Im leaning more on waiting for the 4k version now with all this new issues mad.gif to many risks atm
tgm1024's Avatar tgm1024 12:16 PM 05-15-2014
Quote:
Originally Posted by vinnie97 View Post

I see some curious lines in my grayscale also, even vertical, and I haven't watched *any* 4:3 content. It's just a part of the murky grays/greys that this set is known to produce.

 

I'm wondering that given the early stages of this hardware, if bending it was the worst thing they could have done.

 

I'm still not sure on how they manage to maintain spacing during that whole process.  Spooky stuff, magic, and mirrors....


tgm1024's Avatar tgm1024 12:18 PM 05-15-2014
Quote:
Originally Posted by vaktmestern View Post

Im leaning more on waiting for the 4k version now with all this new issues mad.gif to many risks atm

 

Yeah.  I wish there were a way for the others who already bought it to do this too, but I think that even if they could get a full refund it would be such visual trauma that they'd end up in the hospital within a week....


Vegas oled's Avatar Vegas oled 12:20 PM 05-15-2014
I have not read of any new risks. You risk your life every time you drive your car. This is home theater, an incredibly fun hobby. Part of the fun it being on the front line with a new incredible product .
Totally understand waiting for 4k just to have 4k but the risk ( I have experienced none) will not go away.
Tags: Lg 55ea9800 Oled Hdtv , Lg
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