I had no issue setting my LG 50PK550. Picture was excellent for the first 3 days. I am now experience picture "jump" for a lack of a better word. It's to the point were I get a headache watching the TV? Any guess why now this is happening? I checked all the power sources nearby and there are only 3 TV, Cable box, and DVD/VCR recorder. This arrangement has not changed since setting up the TV.
try turning the auto "intelligent" energy savings off for a moment and see...we like the idea but in practice it was unfortunately annoying