huskers1869 :
. I pulled the HDMI connection only to loose the video.
This test is not about the video, is about HDMI CEC doing the opposite of what it's suppose to do, but OK, I trust you followed instruction and the TV STILL shuts off.
Lets be clear, when u say TV OFF, u mean like you manually off it and it goes back to a standby mode, and LED indicator says so.
Last thing to try is, use an extension cord, plug the TV into another outlet, ideally one on a separate breaker.
If all fails, follow manual to reset TV to factory.
After this, I throw my hands up.