Electrical appliances go on alone?

Because I don't understand so much about technical things I ask here. I have had electronic devices on my own for half a year, first it was one TV (Funai), then the other (Grundig), the PS4 and my system is now also participating. They are all other manufacturers and for my system there's so much I don't know about a universal remote control and the PS4 shouldn't work with another controller (no other one was connected).

Pulling the plug every time would be stupid because I would have to "climb" behind my wall every time. But it can't stay that way, my Grundig has been started four times in the last ten minutes, so it's not very energy efficient. Does anyone have an explanation and know how to fix it?

Do you happen to have a power saving multiple socket?

Better call the GhostBusters

Just use a switchable extension cable with multiple socket strip. And you put them in front of your wall unit.

Yes I have but the devices are not all at the same socket

So simple and yet so good, thanks, I'll do it in a moment. I would still like to know why, I doubt that it is the devices themselves

Okay, I had the problem at the time. I had an energy-saving socket that kept the devices on and off. Since then I switched back to a normal one.

Try to use a normal power strip. Because newer devices almost always have the HDMI-CEC function. At Samsung, for example, the name is "Anynet +". All devices that support the CEC protocol and are connected via HDMI can exchange commands. For example, it could be that if you use the Bluray player or similar. Switch on, this sends your TV a wake-up signal.

Just try it out with another multiple socket. Otherwise I can't think of any other solution.