XBR65X900E - Left side of panel flickering intermittently

XBR65X900E - Left side of panel flickering intermittently

I have an 18 month old TV that gets, on average, about 12-15 hours of use per week. Set has been great up until a few months ago when this problem was just at a point to be noticeable. It has been progressing and is more prevalent now.

ANSWERS: