Pioneer 8G 9G Kuro Reset Guide - Page 48 - AVS Forum
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post #1411 of 1424 Old 08-26-2014, 01:52 PM
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I'm happy for your result!

Plasma TV: Pioneer Kuro KRP-500A - Pioneer Kuro LX-508D - Panasonic TX-P50VT30E
Sources: Oppo BDP-93 - Popcorn Hour A210
Probe: i1Display Pro - Software: Calman 5 Enthusiast - HCFR
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post #1412 of 1424 Old 08-28-2014, 02:07 AM
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hi zimbalo ,how long does it take for the tv to settle down again ,does the tv improve after doing a full reset and voltage change over time.thanks david
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post #1413 of 1424 Old 09-02-2014, 01:22 PM
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After 15 days I retested Grayscale + Near Black on my Kuro 8G.

These were Near Black + Grayscale (ISF with Contrast 28 - Brightness 0 - Gamma all 0 - Space Colour 1):






Today I just changed the Brightness to +1 and I got these results:
Avg. Gamma 2.20 - Near Black improved - Black however amazing! Very well!




Plasma TV: Pioneer Kuro KRP-500A - Pioneer Kuro LX-508D - Panasonic TX-P50VT30E
Sources: Oppo BDP-93 - Popcorn Hour A210
Probe: i1Display Pro - Software: Calman 5 Enthusiast - HCFR
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post #1414 of 1424 Old 09-10-2014, 01:58 PM
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Hi Everybody,
I am fairly new to this. I have been reading threads here and there for years but have not really posted to much. I apologize in advance if I'm stepping out of line or posting in the wrong area.

I have a Pioneer Elite Pro-1150HD and have recently started getting the 8 blue blinking lights of death. I was recently doing some work to the place and accidently killed the power to the building with the unit on.

I have left it unplugged for several days and just plugged it back in and now I am getting 12 blue blinking lights of death.

Can anybody help me out? I don't have a lot of money to spend on a repair man. I am willing to buy some parts and give it a whirl. And I really don't want to buy another TV as this one is better than most anything that I will be able to afford.

Please help me out.
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post #1415 of 1424 Old 09-11-2014, 06:21 PM
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Originally Posted by cru721 View Post
Hi Everybody,
I am fairly new to this. I have been reading threads here and there for years but have not really posted to much. I apologize in advance if I'm stepping out of line or posting in the wrong area.

I have a Pioneer Elite Pro-1150HD and have recently started getting the 8 blue blinking lights of death. I was recently doing some work to the place and accidently killed the power to the building with the unit on.

I have left it unplugged for several days and just plugged it back in and now I am getting 12 blue blinking lights of death.

Can anybody help me out? I don't have a lot of money to spend on a repair man. I am willing to buy some parts and give it a whirl. And I really don't want to buy another TV as this one is better than most anything that I will be able to afford.

Please help me out.

If this is an 8G model then it sounds like the main assembly board failed. I had to replace mine in March and had to buy the board directly from Pioneer and it cost me $883. I installed the board myself. Here is a thread to help you out as others have gone through the same problem.
Official Pioneer 5070/71 Flashing Blue Light Shut-Down Thread

"You lose it in here you're in a world of hurt"
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post #1416 of 1424 Old 09-27-2014, 03:55 AM
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Just performed the reset last night and my serious Red Tint is gone. I do occasionally see some pink sparkles on a white screen but the usually disappear after a few seconds, any Idea what might cause this?
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post #1417 of 1424 Old 09-27-2014, 06:26 AM
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Quote:
Originally Posted by Tompa View Post
Just performed the reset last night and my serious Red Tint is gone. I do occasionally see some pink sparkles on a white screen but the usually disappear after a few seconds, any Idea what might cause this?
If I'm not mistaken it's a voltage issue
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post #1418 of 1424 Old 09-27-2014, 06:32 AM
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After a reset the voltage switch to a "like new" curve, my guess is, leave it as it is and age the TV for 500 hours, then you will see if it goes away by itself or not (I believe it will).
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post #1419 of 1424 Old 09-27-2014, 07:02 AM
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Gonna keep it running and see how it goes. It's more severe with the red bars from the SM. Hasn't shown up in an actual movie yet.
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post #1420 of 1424 Old 09-28-2014, 09:51 AM
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Quote:
Originally Posted by rcapprotti View Post
If I'm not mistaken it's a voltage issue
Probably the address voltage, Panasonic had the same magenta noise when they went eco crazy a few years ago. If you change from a black screen to a green or red picture you might see some pixels not firing in the darker areas due to the weak voltage selection, it looks like dithering and manifests as sparkly trails on moving objects.

I read many patents where they even reduce the number of SF just to avoid a small bump in power consumption, such a shame really.
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post #1421 of 1424 Old 10-04-2014, 01:06 PM
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Originally Posted by rcapprotti View Post
If I'm not mistaken it's a voltage issue
Do you know which one it might be?
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post #1422 of 1424 Old 10-04-2014, 04:22 PM
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Quote:
Originally Posted by Tompa View Post
Do you know which one it might be?
no i don't you will have to go to the red tint forum
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post #1423 of 1424 Old 10-17-2014, 11:33 PM
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Hi there, I'm from the UK and have posted a fair bit on avforums as well as this site. I purchased a used KRP500A about 2 months ago with 4900hrs which had raised black level so decided to reset after reading this thread. After many, many hours experimenting with different voltages and settings I feel that I have come up with the best method to sorting voltages post reset.

Many thanks to Patrik and Stu03 who have alot of knowledge on this and I would not even be able to have got to this stage without their help.

I'm not saying that this method is a silver bullet and it is nothing that hasn't been said before at various times during this thread but this will get your Kuro working back in specification with no artifacts. It will not give you OLED blacks as that is impossible unless you are happy with black rain and lag but the black level will be as good if not better than when the Kuro was new.

My Default Voltages for the KRP500A are:

VOL SUS 128
VOL OFFSET 113
VOL RST P 018
VOL XPOPS1 085
VOL XPOFS2 063
VOL YKNOFS1 D 138
VOL YKNOFS3 D 128
VOL YKNOFS4 D 149
VOL YKNOFSA D 128
YSUS_B 128
XSUS_B 128


I performed a reset as per the 1st page on this thread with default voltages. To get your default RSTP value set it as 0 and turn your TV off and on. (DO this before you reset)

Once the TV is back on bring up a full white field and enter the service menu, navigate to the PANEL -1 ADJ (+) section and on the 2nd page adjust YSUS_B and XSUS_B down 1 notch each to 127. This will give more wiggle room when adjusting VOL SUS. Go back to page one of PANEL -1 ADJ (+) and adjust VOL SUS until all magenta misfires are cleared on the full white field. My TV needed to go to 155.

Once VOL SUS is set put up PATTERN MASK 23 on frequency 72v and you should see some pixel artifacts. Raise VOL YKNOFSA D until this Mask is completely clear. Once that is done bring up COMBI MASK 7 on frequency 72v and raise VOL YKNOFSA D further if there are still some misfires (It should be clean). My TV finished at 155. You then need to lower VOL YKNOFS1 D by the same amount you rasied VOL YKNOFSA D by. In my TV I raised VOL YKNOFSA by 27 so I then reduced VOL YKNOFS1 by 27.

Once this is done bring up RASTER MASK 15 and check for pixel misfires, especially in the top right hand corner, Check all frequencies as I had a slight error on 50v. If you see any artifacts raise VOL YKNOFS3 D by one or 2 notches. One click up to 129 should be sufficient to clear the artifacts.

After this check all Internal Patterns again playing special attention to RASTER MASK 15, PATTERN MASK 23 and COMBI MASK 7. All Masks should be totally clear, if they are your KURO is running with the correct voltages post reset.

Once you are happy perform another reset leaving all your new voltages in place (I found that this gave the best results post reset).

ALL DONE!!

My settings post reset:

VOL SUS 155
VOL OFFSET 113
VOL RST P 018
VOL XPOPS1 085
VOL XPOFS2 063
VOL YKNOFS1 D 111
VOL YKNOFS3 D 129
VOL YKNOFS4 D 149
VOL YKNOFSA D 155
YSUS_B 127
XSUS_B 127

I hope this helps
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Pioneer KRP-500A | Sony STR-DH810 Receiver | Tannoy HTS101 Speakers
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post #1424 of 1424 Old 11-18-2014, 12:01 PM
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After about 200h I pushed up the RSTP from 001 to 030 and got rid of the black rain, will try to lower it the coming months to see how low it can go without the black rain coming back. I also got rid of the magenta sparkles by lowering XSUS B + YSUSU B from 128 to 126.
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