PS: The solution is to install the Alexa app both on the phone and on
the TV and allow remote wake up in it. That will prevent the TV from
going in deep sleep and allow Google to work. Thx Alexa... =))
It's clearly some kind of energy saving problem cause google assistant
can turn on the tv in the first couple of minutes after you turned it
off. But after that, it just says the TV isn't available. Very
disappointed in both Google and Phillips. It's...