The one GOOD thing about Samsung TV's are that they are the one type of TV you can take the back cover off, and simply replace a controller board or two.
Spend 10 mins of research and see if it's simply the video board for that model, and go here and get the part... spend a few mins snapping the new one in and you have a new TV again.
https://www.shopjimmy.com/I've done this for TONS of Samsung TV's as my buddy got hit by a lightening bolt in Arlington Heights in College Station and blew 12 TV's all in the same day.... insurance told him to throw them away so he gave them to me and I replaced one board in each TV and got them all back working... free tv's (outside the cheap parts and labor).
The best was this TV 65" Samsung with real glass from 2006 he paid $10,000 for, and it by far is the best TV picture I've ever seen on any TV. A local TV repair shop told me that TV was gold because of the real glass and how they don't make them like that anymore because they're impossible to ship (via that glass) and the fact it literally weights 200 pounds despite being thin and curved. But ******* it has a better-than-plasma quality picture. Cost me $600 to fix it to new.