Game mode is a display option. Turn on the PS4 if your Smart TV does not auto select the correct HDMI input use your remote and slowly move through the inputs by pressing the Input button slowly until you see the PS4 screen.
If you remove it from the area it is glued to you need to have a nonflammable container and oven mitts or pad available to get it outside ASAP if it is tears open. I have never had one catch fire but they get extremely HOT!
I had this happen to a n Epson. It was a while back and I forget the details. I called Epson support. Don’t know where I found a number. The had me hit sequences of buttons to factory reset the printer. It worked and the printer was fine after that.