Over the last few days I have noticed a vertical green line at the extreme left edge (running from top to bottom) of my 3-month old Samsung 52" 1080p LCD TV. This line only appears when watching television (both HD & SD), and only when the tv is set to the "just scan" option. It never appears when watching DVD or Blu-ray. I am guessing that it has something to do with my incoming tv signal, otherwise the line should be present on all sources, and with all picture sizes. Anyone experienced this before? I need to know if it's the TV that is developing a fault, or if it is the cable signal. Please let me know your thoughts and/or opinions. Many thanks to all.