My 65" Samsung Q7, right on cue, has a few horizontal lines across the screen. 2 months after the 3 year warranty expired.
TV shopping soon.
Hmm, why smiley face? You want to upgrade and now got reason? 
Haha. Not exactly.
Just that this happens to all the bigger screen Samsung TVs that I bought since 2010. About 5 units. The 37" I bought in 2010 still going strong in my BIL’s place.
Unfortunately, my children are Samsung fans. So no chance of a DV capable replacement.