I recently noticed consistently seeing dark and light grey vertical bars during certain scenes on my UN75MU8000. In other scenes, where you have larger sections of any solid color, the bars also appear. Quite distracting. Happens with both DTV or ATV, the only sources I use. I have the Best Buy protection plan, and after calling and sending screenshots of a few scenes I recorded to DVR, they are sending out a tech Saturday to replace my panel! At $1900 just for the part he told me! I was surprised as I thought they would replace it. Purchased June 2017. Anyone else see this defect?