I just picked up this set yesterday (returned an LG 37LC7D). Set it up last night, and was amazed at the difference in picture. Am connecting through a Comcast HD DVR with a HDMI cable. Woke up this morning to fine a thin yellow line running top to bottom of the very left hand side of the screen. Changed to a different HDMI port and the line disappeared. Connected with Component cables and no line. Switched back to the original HDMI port and the line was back. Am thinking I might have a bad port? What do you guys think? Thanks!