lg 42pc1d

[astracat]

hi all
have above model with red speckles in top left corner any ideas how to get rid of them,originally all 1000uf caps in psu were bad which are now replaced also ysus board replaced careful adjustments have helped with the speckles but wont improve anymore anyone have an update for this to see if that would cure
thanks for looking and any help or suggestions are appreciated
astracats