TV doesn't work anymore?

This morning I was having breakfast and the TV was on, I didn't press anything and all of a sudden the screen showed, Netflix can't be used, no internet access, although I had not pressed anything, now the TV no longer works, the red light lights up, it is on, but I can press whatever I want, the TV does not turn on, I already have it, because the plug is pulled out, is useless.

Feels like the TV is broken, has anyone had it before?

Then the power supply unit will have passed, one of the most common defects in televisions.

Batteries changed?