The last TV I bought was a Kogan, and at first power up, or after a factory reset, it let you select where you wanted it to be a dumb screen with inputs only, or run the Google TV OS.
Did the TCL not have this option?
IIRC if I do this on my Bravia I also lose the image enhancements.
Mine did not have that option. There was some "demo" mode though, but it was useless.
This'll be something only relevant to Australians, but it's amusing to see you reply to Ruslan to tell him about your Kogan!