YES I DO! I bought mine only 4 months ago FROM SAM"S CLUB and now it will not turn on at all. I've been waiting 3 days for a repair person to call and make appt to repair. While researching online the past hour or so I am shocked to learn that my problem is well known to Samsung and it's customers. They've even lost a class action suit over it but for older models than mine. No difference though, the issue is the same-bad components in the power board. It has been a finicky P.O.S. since day one. The built in wi fi is a joke. I gave up and hardwired the set to my network. Even then, the performance of streaming videos is not what it should be for a $3k TV. I have a $400 "Dumbass TV" with a ROKU box in my bedroom that puts this "Smart TV" to shame. I feel like one of those idiots that bought "Smart" cars. Other than all that the picture is AWESOME when it does work but I would not buy another one from Samsung until they can demonstrate a solution to this old and well established issue with many of their models.