"10 times Sub Field firing occurs using wall charge and polarity differences between Y-SUS and Z-SUS signals."
LG service manual
What I would like to know, and maybe xrox can help me out here.
If the set is cold (“and I mean cold because of an open window in the middle of the winter, not just from being turned off for a few hours”) there is an initial or maybe there is no all cell initialization as the screen in a dark room emits absolutely no light but the video processing is active, any object displayed is portrayed on a pitch black screen, unfortunately those objects have pixel noise which covers most of the screen, easily seen if I’m viewing a regular full screen image. Then after 30 seconds to a minute (which I’ll call stage 2) the screen pops to it’s regular MLL (which is still relatively dark) just not pitch black, at which point all pixel noise/misfires are then erased.
Now when the room has a reasonable ambient temperature the set (regardless of time off) will just start at the stage 2, no misfires and the regular viewing MLL.http://www.avsforum.com/avs-vb/showt...php?p=19515161
"[Note - the Reset/Initialization step also serves the purpose of setting all pixels into a uniform low level wall charge state so that subsequent addressing of pixels properly occurs. Without a reset step it is very difficult to control the pixels on and off states. This is where the terms "reset" or "Initialize" or "Setup" come from. The pixels are set in a proper state heading into the addressing period. However, this is confusing so let us just stick to the reset vs black level problem.]"
Now my query is, would this be the property of the control board/ temperature sensors etc dictating the all cell Initialization step, if there is any or just a very weak initial cell charge in stage 1.
Seeing that this a tweaking thread I’m trying to gather more fodder to take things to another level, if that is at all possible. Turrican has offered his efforts on resetting the control board to control possible black level rises for those who have boosted the voltages on the power supply to gain more head-room for the Set_up.
I’m just curious if there are more areas that can be explored than just adjusting the pots and also to expand our basic knowledge?
We may have exhausted any further tweaking due to panel/technology limitations but then again this is a thread for "tweaking" LG plasma panels for better blacks.