Copied this from another post I had out here regarding the LG tv's and scaling. I was given this info and it worked for me hopefully it'll help anyone else with similar issues.
This needs to be done from the full menu not just the quick menu option..
I couldnt find "just scan" from quick menu of my LG TV (uj6200) but
found that I should go to the menu
quick menu - setting - aspect ratio - just scan "on"
It worked for me, hopefully it'll work for you.