Official Pioneer Kuro Reddish Tint Problem Thread - Page 21

My TV is still 100% good, I haven't needed to change anything. I have posted a picture below that shows various data from the factory menu. Nothing odd here.



PM-B1 to B5: The accumulated pulse-meter counts for the 5 blocks on the screen
are indicated. (the lowest-order digit represents millions of pulses.)
HR-MTR: The hour-meter value (accumulated power-on hours) is indicated.
P-COUNT: The accumulated power-on count is indicated.
TEMP1: The current panel temperature and the historical maximum temperature
recorded in memory are indicated. The range of temperature indication is from
-50.0 to +99.9. (The temperature unit is " °C (Centigrade) ".)
CLS-RGB: Data obtained from the color sensor are displayed in the order R, G,
and B, with the status indication at the end.

I can understand that it is normal for PDPs to show signs of ageing. What I find totally unacceptable is that it would show an uneven red tint after 4000 hours of use, especially as the panel has a rated half life of 60000 hours (the time it takes for the display to reach half brightness). It seems that the red tint screens are faulty so you don't really have anything to lose if you reset the pulse counter, it will still be faulty (unless you are under warranty that is).

Given the rated half life of the panel, mine is still relatively new so I am 99.9% certain that it will continue to function for many years to come. I have nursed it back to health or hidden the red tint in blackness (one of the two).

I have also looked at the screen under every pattern and color, I have listened to it's buzzing sound, I have taken it's temperature, I have watched it power on and off and back on again. It continues to function with outstanding ability, resolving image data faster and with more agility than ever before. It just seems happy to do it's job.

For info I will be watching the Phantom Menace blu ray tonight and will post some juicy black pictures for your analysis!

Lots of Kuro owners are pretty passionate about getting the "perfect" picture so I don't think all suffer from this problem (it's very obvious).

D-Nice said that the ones who have real red tint issues are suffering from it because the Kuro's factory settings weren't done correctly (or something along those lines), which makes sense to me to why the TV hasn't aged properly.

I'm thinking about getting into the settings and do some voltage tweaks, doing a whole reset still sounds risky to me (my luck is so bad I swear the worst case scenario will always happen to me lol).

Thanks for the reply, D-nice.

That has pretty much made my mind up for me. Come the New Year I will be contacting that Pioneer service centre and asking them to change the screen.

It is amazing that so many people with so many different models in both the US, UK and other parts of Europe have got this issue with their panels.
I suppose in the grand scheme of all Kuro's sold, the numbers may be low, but it is ridiculous that Pioneer are not acknowledging there is an issue. How can they say it is the norm when not all sets are suffering from it?

We bought Pioneer for the build quality!

Stroud why you have increased only your VOL RST P and not VOL SUS, VOL OFFSET fand VOL YKNOFSA D?

+1

To get a perfect picture.

I know but you have not responded to my question and what pattern have you used to adjust your VOL RST P ?

Hi D-Nice

Is it fair to say then that those Kuro's that are not effected by this issue will not have even the faintest hint of red in the conditions described when it manifests itself?

For me, it seems to show up when I have the lights off and I'm watching a film with a very dark scene. Letter box bars on a 16:9 film will have a very slight tint in them in these conditions for example. Or if a signal is being fed to the TV but there is no picture on screen.

It also shows that faint tint when I'm changing channels. That second when the screen goes blank as the TV changes.

I know that Kuro's will show some risidual glow in the 2nd and 3rd examples, but it should be a very dark grey, shouldn't it?

Do you think swapping the screen could cure it or is more than that?

Cheers.

D-nice has already stated that some slight reddish glow IS normal due to the AR coating have a purplish red tint, and that most of us complaining about this are really seeing what is normal for these sets. I guess the question is just how much red is normal? I'm leaving mine alone for now..LG and Samsung are showing 55 inch OLED sets in Vegas next month...those will probably blow away the Kuros and the Sharp Elite for PQ. Hopefullly my Kuro lasts until OLED's have become affordable.

Kuro LX 5090H décembre 2009 , 100% black in black .

Thanks again, D-Nice

Cheers.
Mike.

even the 70 inch elite kuro shows a slight reddish/purplish tint to pure black. it's slight but there...at least on the one i saw

You are correct.

70" Elite Kuro? Sign me up!

The poster meant 70" Sharp Elite

I think I may need to make that adjustment, my no signal blacks have dirty patches with no signal and non uniform too. They did before i messed around too.

I would love to see some before/after pics of the red tint issue after a recalibration.

I have not ben understood how you do to adjust your VOL RST P. For my screen I have the increase the VOL YNOFSA D 155 and my fVOL SUS 160 no longer see purple sparkles.

Well an update to my Idea of dropping VOL YNOFSA D by 40-60 .

I put a white screen on my media PC and artefacts like stuck pixels all over the screen. mostly blue but some red. Go back to the old value and they are gone, but I'm back to square one with the red glow.

I'm going to call it a red glow from now on, as there is without doubt an ever so slight red tint that comes through the cover coating of the screen that cannot be helpled but isn't a fault. When it's actually glowing red with no signal and on and even showing on dark areas of the screen line black bars on Movies wider than 16:9. You have this issue I think most of us are describing. Normally blacks should look inky black next to anything else displayed on screen.

Please don't mix kuro with the sharp. It doesn't deserve that name.

You are right though. I saw it too.

Thanks D-Nice. I never knew this 'problem' existed until last night when I found this thread (haven't been on here in quite a while). I bought my 6020 new from VE back in '08 and it has been an awesome display ever since. I've been using your reference settings ever since I got the break-in done and I never noticed any reddish blacks until after I read part of this thread last night. Maybe it was just my mind playing tricks on me because I was looking for red tinted blacks or maybe mine is normal like you say. Now to get my mind off of it so I won't think I'm seeing them any more.

I find this Red Idle Charge stuff a bit confusing. If its there all the time on all Kuros, why was it never mentioned in any reviews?

There are certainly enough experienced professional reviewers out there that any idle red tint would have been picked up so why do all reviews proclaim "outstanding black levels" etc rather than "outstanding black levels but with a red tint when watching a fade to black in batcave conditions"?

Theres not one mention of a red tint/glow in any review I've seen - I can't believe that they would have missed this if all sets have it. A Kuro or any TV for that matter can't have Inky blacks AND a red tint at 0-10% and no-one (especially professionals) notice.

I noticed that my Kuro had an red tint within weeks of receiving it but presumed this was a calibration issue. Having had it calibrated and the problem was still there I spoke to Pioneer who told me the red tint was "normal". Two years later, the level of red tint is exactly the same but I now no longer watch dark movies in a batcave otherwise the red becomes obvious. So much for "inky blacks" and the "deepest blacks" ever, they never existed, certainly on my TV. Unsurprisingly, I see no mention of the tint/ageing in any of Pioneer's advertising or documentation for the TV.

If I'd known about the red tint (either by aging or the Idle Charge thingy) beforehand, I would NEVER have bought this TV.

How many reviews actually measure the grayscale between 0 and 10% stimuli?

There isn't one display out there that does not have a bias at that light level. The Sharp Elite goes red... so does the 2011 Panasonics. The 2010 Panasonics were extremely blue between those points. LGs, well they are green at those levels. Samsungs.... mostly red.

99% of the Pioneers out there don't have a true red tint in their idle luminance. That is why you do hear of this in reviews (I only know of one and that was for a 1st gen Kuro).

On my 600M (probably around 11,000 to 12,000 hours). I can and have always seen a slight reddish tint when off or light reflecting off of screen and I have always presumed this to be from the AR coating.

When I display 0% to 10% patterns I can not detect any reddish tint to the black/grays. If there is a shift in this region I can not pick it up visually on my monitor. I guess I am "lucky" and I hope it stays that way!

barry

Here are the pics from Phantom Menace. Below are the normal shots as best as I could get. They don't show any luminance to the blacks which is the same as when you look with the naked eye. The picture at the bottom has been over exposed so that you can all of the light output by the screen. You can just about make out the difference between picture and bezel. You can see a red luminance in the screen (and also light coming through the crack of the door behind me! Actually the red maybe light reflecting off the filter?) but thankfully it is even across the screen. Impossible to see with the naked eye. Anyhow, enjoy!





Over exposed image:

Beautiful pics. For the red may be that to RST P is too high ?

Stroud

Thats a major change! Those look awesome. I'm glad I did a reset too. My black bars finally look black again and amazed at how much better detail looks. I thought there was something peculiar about my 5020 when I watched a few movies this month is a totally dark room. I really dont watch movies during the summer and fall, but the red/grey tint wasnt there last spring like that, so I must have hit some value at 5000 hours that caused problems. I'm just guessing on that. I still have a dark gray glow at 0-10% stimuli, which is the way it was when I first got it, not the red tint it evolved to being.

BTW, what did you raise your RST P to after reset? I went from 012 to 035. Never had any sparkles, but had black crush if I left it at 012. I had it a bit higher than 035, but the red tint started showing.

Me too if I increased my RST P I have red tint back.

My RST P was at 23 before and after reset but I noticed black crush / pixel lag where the screen had been black for some time (movie bars etc.). It wasn't immediately noticeable. I raised RST P until it stopped (even if movies bars had been there for 2 hours). The magic number for me was 62. I think the number of hours you have plays some part it in too.