Another VIZIO turns off randomly

"I have a Firestick and realized my Vizio was intermittently powering off and on when I was trying to control my television using the T.V.’s remote or buttons and not the firestick remote. I also tape off the I.R. sensor on the firestick remote or move it so the T.V.’s I.R. sensor doesn’t detect the remote. Problem solved. I don’t know if you’ve got a Firestick or not, but this is how I solved my issue.

I found the answer in this ifixit post: TV randomly turns on and off repeatedly"

Under Settings you will see CEC Settings. Turn off the CEC Function. This will be the root cause off the problem for many people as one of the connected devices is sending an improper CEC signal and causing the TV to turn off.

I have been all over these forums trying to figure out what could possibly be wrong with my tv and nothing seemed to work. House 1 i was on a bottom floor mounted on my wall over a year no issues. House 2 on a wall lots of sunlight with no ac I had issues all day long as soon as spring hit. House 3 I had ac but my tv was between 2 windows I would have problems at certain times of the day and just before sunset. It finally hit me that every time my tv shut off I was also getting up to turn on my ac. I bought a little fan that I keep angled at my tv during the day since the heat/sun seemed to be what was causing it. I did that 6 months ago and I have only had the same issue on days where I forget to turn on the ac and it’s 80-90 outside.

So I took mine to a TV Repair shop and it acted just fine but when I got hit home and hooked it up again it started all over. So next time I took it the guy asked me what I was hooking up to the TV and we found that by replacing the HDMI Cable it worked fine.

Mine was the power button on the back that was sticking. I cleaned it up, and pushed it a few times and it was fixed.

i did a factory reset and put in my zip code and it works now