I just had this 65C7 for a few days. Today, during watch Planet Earth II on NetFlix, I turned off the TV in the middle of an episode. A few minutes later, i saw a vertical red band, about a 1/8" wide, cross the whole screen. When I turned on the TV again, the line becomes a dark grey line. I called Amazon. They immediately said this is a defect and offered me return. I really like the TV. But i am afraid the same thing could happen again. I searched around and found a YouTube video mentioned that certain NetFlix program can trigger it ((OLED Banding Test) Vertical Banding Lines /...Watch this video on YouTube). Does anyone have any experience or background knowledge on this issue? I am attaching the photos for both on and off screen.