On my 5080HD, some pixel sparks were occur on occasion even at the default RST P setting. It is not perfect. Trying to figure out if the RSTP value is causing excessive sparks can be annoying. I am currently at RSTP=019 (which is 140V) about 25% lower voltage from default of 190V. There is still be a reddish glow with a 0% black video signal. Red is still noticeable on the borders. However, the most noticeable difference is in the clarity and color gamut after lowering the VOL RST P.
Here are my observations about the effect of the Red Tint on 8g Kuro:
Clarity - When the red tint is removed, you see more detail. That red tint was like a filter. When it is removed from the picture, there is a sense of improve clarity and depth. The black level is lower and edges are more pronounce.
Color - Removing the red tint allows a more accurate reading by meters. I have a Colomunki spectro. It is not calibrated against a reference but the color readings are repeatable. I trust it to show any difference in the color gamut reading. I use a VideoEQ to correct the gamut. After the RSTP reduction, the red and green was reading a little over saturated. Over the last couple of years, the meter showed red and green points to be on target but my subjective view of the picture was that it was too warm. Now the meter is accurately showing that the red and green was in fact over saturated. The blue (xy points never correct) showed very high brightness before RSTP reduction. Now the blue brightness is reading lower, not perfect but enough to reduce the deltaE for blue by 1% in general. Now the Blue is show 2% error instead of 3%.
Overall, I am very happy with the results.
My TV is currently at 14,500 hours. No counter resets, just VOL RST P reduction.
Edit: I gave up trying to determine lowest mll. I need a better meter. I set VOL RST P to 91. I decided to use the color gamut measurements to determine when the effects of the red tint is gone. It starts to disappear about 96. There is still a red glow on the blacks but not noticeable with content on screen unless you look for it.
Edited by bigtom4prez - 4/27/13 at 6:05am