I'm sorry to hear that you're having this issue.
There are some reports of units shutting down, although very few of the model you have. There are hundreds of thousands of units sold every year without issue, and in the cases where something does go wrong, we do take care of the issue.
I can appreciate that finding a box and shipping it takes effort, but I trust if you send it to get serviced, it will be returned in working order.
I have another on of those Samsung TVs that won't turn on. It was plugged into several outlets which all tested good. But according to Samsung troubleshooting I have a bad power supply in the unit.
How prevalent is this problem? I am actually very upset about it right now. I don't have the box any longer and have to go to UPS to buy a box to ship it back to a third party service provider.
Apparently, according to the internet search I did, this is a known issue with several of the Samsung TVs. Should I look into possibly getting a set from a different manufacturer?