I have a Denon AVR-X2800H receiver, and the Denon integration installed (on HA 2023.2.2).
If I open the Denon integration in the HA GUI I can turn the receiver on/off using the power button, but I can’t turn it on or off by calling the media_player.turn_on/turn_off service (either manually from the HA GUI or in a script). Calling the service results in absolutely nothing happening.
Yes I have the latest firmware on the Denon.
I don’t see a option for controlling via LAN in the Denon settings. But I guess it must be enabled as I can control it from the Denon integration item in the HA Lovelace UI?
Settings → network → there should be somewhere a setting, that allows or disallows remote control, when in standby modus. At least, my AVR-3600h has it, and it must be ALLWAYS ON.
Ah OK I found the “Network Control” option in the Denon Network Settings - it was already set to “Always on”
I’ve just noticed that I have a similar problem with my LG Smart TV (OLED65C24LA). I can’t turn it off using the media_player.turn_off command. If I try to configure it in the integrations area of the HA UI, I get: " Unable to retrieve the list of sources. Make sure device is switched on". The TV is turned on.
Not sure if it’s the same problem but it looks pretty similar
???
So I removed the LG integration and re-added it, then set up the TV again. It found the TV, but when I try to call the media_player.turn_on service I get: “…does not support this service”
???