AVS Special Member
Join Date: Sep 2000
Location: Sugar Land, TX, USA
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Six or so year old 60PK950 had the HDMI connections go out, so while I had the back off fixing that, I ran this black level tweak.
It's an amazing improvement and will tide me over until I feel its time to go OLED.
I only adjusted Set_UP and Set_DN. Sort of followed the logic of the last instructions in the first post. So it wound up I put Set_UP fully clockwise and starting Set_DN at fully clockwise, I turned Set_DN Counter Clockwise until the noise/misfires subsided.
I used color bars, 100% white, and other test patterns to verify it didn't mess anything up, but full black was the best pattern for setting Set_DN.
In case you're interested I fixed the HDMI issue by using a heat gun WITHOUT removing the board from the TV. I heated just the HDMI chip to 250-300 degrees for 2 minutes.
Happy Camper! Thanks all for the valuable info!