I have the same issue. Nearly the same situation. LN55C630 was bought two years ago. It was not until recently (July, maybe end of June 2012) that these vertical lines started appearing. At first it was a slightly darkened pictured caused by faint greyish/dark lines that graduated to colored lines that are very noticeable. In both cases wiggling either the HDMI cord or Coax Cable cord (plugged in for PIP) would temporarily fix the issue and the screen would return to a clear bright picture. Was this issue solved yet? Is it an issue with the Video board?