I purchased a 42" Samsung plasma for a friend a few years ago and 13 months later she ended up getting a green vertical line from top to bottom through the screen all the time. We paid $499 for the plasma back then and when I contacted Samsung-they wanted somewhere around $600 to fix it. There isn't a setting to resolve the issue-it is something that you just have to live with. No matter what the issue is out of factory or extended warranty, flat screens under a $1,000 aren't worth getting fixed. You can purchase a new TV for less than what it would cost to fix.