I have a Vizio 65” TV and have been dealing with powering off issues for 2 years. I've searched Google and YouTube for solutions with no luck. Finally one day, it's like the fix just fell in my lap. Here's the solution that has worked for me. My TV has worked fine with no shutoffs for the last month. First, unplug your TV from your surge protector and hold the physical power but on the TV down for 20 seconds and then plug it directly into the wall socket. Next, do a factory reset. Now you enjoy your Vizio TV until we leave Vizio for good because I will NEVER EVER buy Vizio again in my life!