HDMI CEC - Can turn TV on and off but no other services

Hi all,

apologies if this is a silly issue, but I have checked all supporting documents and posts and can’t seem to find an answer. I am very new to the Home Assistant world and coding in general so bear with me.

I am working on setting up my TV to work off CEC commands. I used the HDMI CEC document and set it up as a “Media Player” within the .YAML file due to this working the best (setting up HDMI CEC raw messages did not work at all). As of right now I am able to turn the TV on and off from both services and from the UI. However, when I try to mute or change sources nothing happens. I do not get a kick back or any error logs so I am not sure where to start.

Any help is appreciated.