Samsung PN51E6500EFXZA - Manual (Page 617)

jacks. Incorrect or loose connections
may cause color problems or a blank
screen.
The color is poor or the picture is not bright
enough.
Adjust the Picture options in the TV
menu (go to Picture Mode / Color /
Brightness / Sharpness )
Adjust the Energy Saving option in the
TV menu (go to System
→
Eco Solution
→
Energy Saving )