Turned on my 2017 qled QN55Q7FAMFXZA this morning and saw a Grey screen with sound ( sorry no picture) Tried multiple times to Power on and off with Samsung remote but kept getting the grey screen. Finally unplugged the both TV and one connect box and picture came back. Had tech come out twice already since owning and said TV was fine. Software is updated to 1270. Anyone else experience this grey screen when turning TV on?