Maybe it is your model? On mine I press input button, I get a list of options, sorted by if the connected device is on or not, and select. so for me is usually,

Maybe it is your model? On mine I press input button, I get a list of options, sorted by if the connected device is on or not, and select. so for me is usually, input button, one touch left, center button. I can also press the input button more times that does the same as the right button