It makes sense if you can repair it with a few $0.15 capacitors and an hour of your time. I repair my electronics when they fail, and it saves me a lot of money. Somehow, it's become cool just to throw perfectly serviceable stuff in a landfill rather than watch a YouTube video and learn a little soldering.
Yes, I'm also personally very likely to tear it apart and see if I can replace any failed electrolytics, but that's only applicable to 0.5% of the population or less. I'm doing that as the least hassle way to get a working TV again (less research, less driving, no changing the TV mount, etc).
99.5+% of people are better off economically and time-wise to throw away any out-of-warranty TV undiagnosed and buy new.
Any commodity TV is immediately beyond-economic-repair, IMO.
1 - https://www.bestbuy.com/site/samsung-50-class-led-nu6900-ser... (literally the first search result I found)