OK, not sure what the problem could be.
I Purchased a 24" ONN Roku TV at Walmart for the Kitchen at my Residence.
Connected XFinity X1 Box to HDMI 1 (have also tried the other 2 HDMI Ports as well, same result)
If I unplug the Xfinity Box, then Power it on after 10 Seconds, I get the Welcome Screen (3 Languages), then it will go to a Black Screen after a while.....then it will be a Blue Screen.
I have used 2 other HDMI Cables. 1 had the same Issue, the other (Brand New) did not work. I plug the Xfinity Box back into my old TV, and it works perfectly fine, Picture and Audio. With the ONN TV, I can connect a USB-C Hub to my Phone, and plug in a HDMI, which works perfectly fine. With the Blue Screen Issue, there is no Audio either.
I also connected the ONN TV to the XFinity Box in the Living Room, but that also had a Blue Screen.
Is this a TV Problem, or XFinity Box-s Problem?
EDIT: Just connected the ONN Roku TV to my Laptop with a HDMI. Works perfectly