I have recently brought a sony 55x8509 tv. The issue i have is that when i turn on the tv it goes onto youtube. I am unsure of how to change this setting as i want the tv input to come on instead.
I suppose you have a new Android TV model. AFAIK the tv switch on using the latest input shown when switched off: you should check it or try switching it on using a number button instead of the power on one.