I’ve been having that issue with Sony and Samsung TVs where they won’t turn on after being off for while. But it’s only when trying to use a discrete on command. If you use a remote with a toggle power or push the button on the tv it will turn on then the discrete commands will work for a while. The Sony’s seem to be an issue with android os. When it locks up, after I power it up it does that android start up animation. Very frustrating.