Hi friends, I have a similar problem with my UE50ES500, I followed the same instructions but nothing change, here below are some pictures to show my statustempinbox wrote:You can fix this by accessing in to the service menu you don't need to reset eeprom.
Go to Control
Then to suboption
Then change the value of "LVDS FORMAT" to VESA or PDP
SpoilerShow



Bye, Tritus