That these are out of warranty and you wanted support or something else. While it's quite odd to have this issue, think about a car after many years and out of warranty. Car dealers have a system to take it in and give an estimate but did they help fix it? Not without being paid.
This morning all 5 tvs in my home turned on at same time. Since then they are turning off and on repeatedly. We checked remotes, unplugged all tvs, and even turned off wifi. Plugged in one of the tvs and it did it again. We even went so far as to plug in an extra tv and same thing. It powered on and then off repeatedly.
All of our tvs are Samsung. I called Samsung and they offered no assistance.