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The Official Pioneer 9G Kuro Settings/Issues Thread - Page 359

post #10741 of 10767
Quote:
Originally Posted by jellow View Post

I know this is an old thread but I just wanted to confirm that tweaking the pot on the power supply board of my 151FD fixed the purple sparkles that have started to appear on my display when switching from a dark to light image.

The potentiometer is marked Vo ADJ (below the pot) and the pot is located to the left just below a group of 4 capacitors on the AXY1201 board (see photo). I tweaked the pot about a quarter turn clockwise with the TV unplugged (for safety) and then checked. All the sparkles are gone.

I hope this helps someone else. The purple sparkles have been driving me crazy so I'm thrilled this has fixed the problem. It was a pain in the butt to unmount the TV and remove all the screws holding the back cover but at least I didn't have to pay for a service call. I don't know how long this fix will hold but I will post again if it doesn't.

Many thanks to the posters who posted this fix. I don't want to replace this TV until I absolutely have to. Love my Kuro. smile.gif



This worked for me also. I just turned it 1/4 turn to the right an viola, the purple sparkles magically disappeared. Not believing my eyes I turned the potentiometer back to original position and the sparkles reappeared. So this fix is confirmed to work. Not sure how long it will hold but I will report if it reverts back to purple sparkle horror show.
I have my KURO back!!!!!!!!!!!!!!!!!!!!! If it hold more than a month I will get it re-calibrated.
post #10742 of 10767
Quote:
Originally Posted by Jano18 View Post

If you are interested in selling them, send me a PM. Thank you


Sorry I'm just seeing this are you still interested?
post #10743 of 10767
Glad to see that you guys found a fix for purple sparkles.my kuro had the same problem I was lucky that pioneer replaced mine but this is a good thing to know in case I ever have that problem again.its good to see that you breathed new life into your kuro I hope it last for a long time
post #10744 of 10767
Quote:
Originally Posted by GobbityGotz View Post

Not sure how long it will hold

3 months since i adjusted the pots
it holds
Edited by pg_ice - 3/31/14 at 1:08pm
post #10745 of 10767
Quote:
Originally Posted by pg_ice View Post

3 months since i adjusted the pots
it holds

Awesome news!
No sense waiting then. I just set up my re-calibration for mid April. Its been 6 years since last tweak
Edited by GobbityGotz - 3/31/14 at 7:18pm
post #10746 of 10767
HELP! My Kuro has problems. First, let me say I have not read the entire thread. I have a PRO-151FD. I bought it brand new from Value Electronics. It was built in 2009, however, I did not install it until November 2010 due to renovating the family room. I estimate it has about 3500 hours (I do not know how to get an actual hour readout). It has never been calibrated. I have it set for Movie, first level of energy saving, and I use the orbiter. My TV is OTA and we mostly watch broadcast TV (about 90%) and the other 10% is bluray discs. When we watch CBS or NBC they broadcast 1080i and so the screen size is dot by dot, for ABC and Fox which broadcast 720p screen size is auto. I have never used the set for games.

Last night when I turned on the set to watch CBS (1080i - dot by dot) I noticed there was a black edge on the right hand side of the screen about 1/2" wide. It also seemed there was a slight smaller black edge on the bottom of the screen. I check NBC and saw the same thing. I check recorded program from my DVR and saw the same thing (I have not checked with my bluray player, plan to do that soon). I switched screen size to full and that seemed to greatly reduce the black edge effect (width dropped to 1/8" or less). This morning I checked again and the problem was still there.

I decided to run the screen saver pattern (it is running right now) and what I saw seems to be related but is not exactly the same. When the bright white bar is not on a part of the screen most of the screen appears to be a dark grey except at the right hand side of the screen there is a vertical band about 3/4" wide that is a very dark grey (but not true black) that turns white when the white band moves over it. The bottom (and the top and the left hand side) have no such band.

I have no idea what is going on. Has anyone else out there seen this problem? Is my screen starting to go? Is there anything I should tr to better understand the problem? confused.gif
post #10747 of 10767
sounds like a PDP module issue , that would not be repairable , hope that is not the case ,
post #10748 of 10767
What is PDP?
post #10749 of 10767
Quote:
Originally Posted by ALP View Post

What is PDP?


Plasma Display Panel

post #10750 of 10767
The screen saver has stopped and I have been trying understand what is going on. It appears I have two problems (although they may be connected some how).

1. The first is the black edge coming in on the right hand side when I switch to dot by dot. I happens on TV and all of my HDMI inputs including the bluray player. It is some what erratic in that it does not happen all of the time, but it happens more than 50% of the time.

2. The second problem may be one that I have now noticed due to the seeing the first problem. I noticed it first when I ran the screen saver. There is a vertical bar on the right hand side of the screen that has a different grey (it is darker and has a slight red tint to it, but it is still basically grey) than the rest of the screen. It is about 5/8" to 3/4" wide. I can now see it even when the screen is off (even when the unit is unplugged). I do not think it can be something on the outer surface of the screen or damage to the anti-reflective coating since it has perfectly straight sides that run top to bottom. It is as if someone has put a strip of tape on the screen from top to bottom (of course, there is no tape on the screen). I can now see the strip when I watch content that has darker scenes. I can see it as a vertical strip that looks darker and a slight touch red. I brighter scenes I cannot see the strip.

I would appreciate any thoughts on either of these. Is it worth having the set calibrated?
post #10751 of 10767
Quote:
Originally Posted by ALP View Post

I would appreciate any thoughts on either of these. Is it worth having the set calibrated?

forget it
you cant get rid of uneven wearout/burn in or what this is with a calibration.

this must be the craziest problem i heard off
edges that is visible even when the tv is unplugged?
you must have some serious burn in there or that the glass is broken/burned from overheating the Y board?
just speculations

one tip: buy another Kuro wink.gif

another tip is to post pictures of the problem.
Edited by pg_ice - 4/10/14 at 9:19am
post #10752 of 10767
I have a question regarding image retention. My friend just bought a used Kuro (5020) and noticed something. He said whenever he powers on the kuro, it shows temporary IR for a few seconds from the last thing he had up on the screen. For instance he was playing xbox and you could see the logo barely when he powered it on but went away in a few seconds. He then switched to his oppo player's input. After it was on the screen for a few minutes, he switched to a blank input and you could make out his oppo blu ray player logo for a few seconds then it was completely gone. I don't remember seeing this on my previous kuro's but I could be wrong (or wasn't looking for it). It doesn't sound like an issue but I wanted to get everyone's opinion.
post #10753 of 10767
That's funny you brought that up I was talking to my friend this morning about the same thing,if I use my oppo player and that's the last thing on you will see the oppo logo. So what I do now is a powerdown my receiver my Blu-ray player and then let my TV go from the gray screen to completely black for a few seconds and then shut it off. When I do that I don't see any IR when I power the TV back on
post #10754 of 10767
Quote:
Originally Posted by rcapprotti View Post

That's funny you brought that up I was talking to my friend this morning about the same thing,if I use my oppo player and that's the last thing on you will see the oppo logo. So what I do now is a powerdown my receiver my Blu-ray player and then let my TV go from the gray screen to completely black for a few seconds and then shut it off. When I do that I don't see any IR when I power the TV back on

I'm glad it's normal then. My friend will be happy! Thanks!
post #10755 of 10767
Tell your friend power everything off except for the Tv and let it go black then turn the tv off and see if that works
post #10756 of 10767
Quote:
Originally Posted by YOTR View Post

I have a question regarding image retention. My friend just bought a used Kuro (5020) and noticed something. He said whenever he powers on the kuro, it shows temporary IR for a few seconds from the last thing he had up on the screen. For instance he was playing xbox and you could see the logo barely when he powered it on but went away in a few seconds. He then switched to his oppo player's input. After it was on the screen for a few minutes, he switched to a blank input and you could make out his oppo blu ray player logo for a few seconds then it was completely gone. I don't remember seeing this on my previous kuro's but I could be wrong (or wasn't looking for it). It doesn't sound like an issue but I wanted to get everyone's opinion.

IR can happen sometimes but this is the first i'm reading about it happening when the TV is turned on. I get it sometimes too but it goes after a few seconds. If i let the screen shut off after 10 seconds when i wake it back up all IR is gone. I rarely have to do that do that though. I was just experimenting.


rcapprotti, did your TV become uniform yet? I remember you were asking why the middle of the screen was darker than the rest. And why black level wasn't as dark as the 6020 you saw at BB. I explained it would even out with use and get darker. Just wondering how it's performing now.
post #10757 of 10767
Quote:
Originally Posted by GobbityGotz View Post

This worked for me also. I just turned it 1/4 turn to the right an viola, the purple sparkles magically disappeared. Not believing my eyes I turned the potentiometer back to original position and the sparkles reappeared. So this fix is confirmed to work. Not sure how long it will hold but I will report if it reverts back to purple sparkle horror show.
I have my KURO back!!!!!!!!!!!!!!!!!!!!! If it hold more than a month I will get it re-calibrated.

im sorry to say this but you should put back the VA ADJ pot to default.
you are not removing the sparkles you just move them to another IRE level.

sparkles only appears near black.
if you turn the VA ADJ clockwise the gamma near black is lowered.
the sparkels is still there but you have moved them to another IRE.

so to not screw up gamma near black put the VA ADJ pot back to the middle.
that was the problem i had when i had turned it all the way to the right.
gamma near black was way to low and details near black was washed out.

if you want to test it
put up an grayscale pattern and watch when the near black levels gets brighter or darker when you turn the VA ADJ pot.

so this VA ADJ pot controls gamma near black only.
post #10758 of 10767
Quote:
Originally Posted by pg_ice View Post

im sorry to say this but you should put back the VA ADJ pot to default.
you are not removing the sparkles you just move them to another IRE level.

sparkles only appears near black.
if you turn the VA ADJ clockwise the gamma near black is lowered.
the sparkels is still there but you have moved them to another IRE.

so to not screw up gamma near black put the VA ADJ pot back to the middle.
that was the problem i had when i had turned it all the way to the right.
gamma near black was way to low and details near black was washed out.

if you want to test it
put up an grayscale pattern and watch when the near black levels gets brighter or darker when you turn the VA ADJ pot.

so this VA ADJ pot controls gamma near black only.

I had D-Nice come by on Wed 4/16 and he calibrated the set. I told him about the tweak I did to get rid of the purple washout/sparkles. He did not see any issues with my set. I can post the results he gave me but the set looks freaking amazing and details in the black dont seem affected. As long as it looks good to me and the sparkles are gone Im happy. I am going to keep my current settings. Here is a report of his calibration.

PRO-151FDPostCalibrationReportISF-Day.pdf 133k .pdf file
PRO-151FDPostCalibrationReportISF-Night.pdf 127k .pdf file
PRO-151FDPreCalibrationReportISF-Night.pdf 137k .pdf file
post #10759 of 10767
Quote:
Originally Posted by GobbityGotz View Post

As long as it looks good to me and the sparkles are gone Im happy.

ok great
so you are sure the sparkels are gone not just moved to another brightness level?

put this testpattern up on the tv
check for sparkles in the last visible boxes

as for the wrong gamma near black you must calibrate with the 5% grayscale steps to see it
its only at 5% white you will notice it.

i see that D-Nice uses 10% steps on your tv.
that way you dont know where IRE 5% is


Edited by pg_ice - 4/19/14 at 1:32pm
post #10760 of 10767
Quote:
Originally Posted by pg_ice View Post

ok great
so you are sure the sparkels are gone not just moved to another brightness level?

put this testpattern up on the tv
check for sparkles in the last visible boxes

as for the wrong gamma near black you must calibrate with the 5% grayscale steps to see it
its only at 5% white you will notice it.

i see that D-Nice uses 10% steps on your tv.
that way you dont know where IRE 5% is


I do not see any sparkles at all on any of the areas of the pattern especially the last visible boxes. Looks fine to me. I used USB stick to put it up on the Kuro

This is what I was getting before. Go to full screen. You really see it a 1:20. Now it doesnt happen anymore after the 1/4 turn of the potentiometer
https://www.youtube.com/watch?v=JqQXLD8sinI

Im extremely happy.
post #10761 of 10767
Quote:
Originally Posted by GobbityGotz View Post

I had D-Nice come by on Wed 4/16 and he calibrated the set.
Thanks for posting your calibration comments. I've added a link to your post in the flat panel (post number two) lists that are linked in the signature area at the bottom of my post.

If you have further comments to make about your audio or video calibration, it would be great if you could use the edit command to add them to your original post. Enjoy. smile.gif
post #10762 of 10767
Quote:
Originally Posted by GobbityGotz View Post

I do not see any sparkles at all on any of the areas of the pattern especially the last visible boxes. Looks fine to me. I used USB stick to put it up on the Kuro

This is what I was getting before. Go to full screen. You really see it a 1:20. Now it doesnt happen anymore after the 1/4 turn of the potentiometer
https://www.youtube.com/watch?v=JqQXLD8sinI

Im extremely happy.

ok that was not the sparkles i was referring to
but still you have screwed up gamma near black with that adjustment.
post #10763 of 10767
Quote:
Originally Posted by pg_ice View Post

ok that was not the sparkles i was referring to
but still you have screwed up gamma near black with that adjustment.

Well I may but. ... you see my video I posted and what I was having issues with. That is fixed. It was becoming rampant on the screen. Do I have another choice that would ally both issues besides buying a whole new 151FD?
I can live with a little gamma issue near black that I can't really notice.
post #10764 of 10767
Quote:
Originally Posted by GobbityGotz View Post

Well I may but. ... you see my video I posted and what I was having issues with. That is fixed. It was becoming rampant on the screen. Do I have another choice that would ally both issues besides buying a whole new 151FD?
I can live with a little gamma issue near black that I can't really notice.
Did D-Nice tweak your black level ?
post #10765 of 10767
Quote:
Originally Posted by qwknuf6 View Post

Did D-Nice tweak your black level ?

Yes. He got it down to 0.0009 fL which he said was right about the best you can do on a 151FD Elite
post #10766 of 10767
Quote:
Originally Posted by GobbityGotz View Post

Yes. He got it down to 0.0009 fL which he said was right about the best you can do on a 151FD Elite

He said that? Because other owners 151 he calibrated got to 0.0003 and lower. 0.0009 is basically 0.001. He couldn't even get it to 0.0005?

Maby he ment your 151? What is the build date?
post #10767 of 10767
Quote:
Originally Posted by saprano View Post

He said that? Because other owners 151 he calibrated got to 0.0003 and lower. 0.0009 is basically 0.001. He couldn't even get it to 0.0005?

Maby he ment your 151? What is the build date?

Ill email him. It is quite possible he said 0.0005 fL
Visually the picture is inky black, it is right on par with the bezel and you can't distinguish between the two even in day mode. Can't say that I'm not happy.
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