Samsung UA40ES6200MXSQ, UA46ES6900MXSQ → Eco Solution → Energy Saving, → Picture → Reset Picture

menu (go to Picture mode / Colour / Brightness / Sharpness)

ŒŒ Adjust the Energy Saving option in the TV menu (go to Menu → System

→Eco Solution → Energy Saving)

ŒŒ Try resetting the picture to view the default picture settings (go to Menu

→Picture → Reset Picture)

There is a dotted line on the edge of the screen.