I've had plenty of days where I play +10 hours. No damage here. Like I said, his TV in particular or the model must hace a flaw or defect. Another possibility would be that OP didn't "warm up" his TV when he bought it. Can't remember how I did it, but you have to run a program or follow instructions the first time you start your plasma. So, no need to talk down on plasmas in general. By the way, when I start my ps4, the tv switches automatically to "game mode". Not choosing that mode by default could also be a reason for the damage done.