robertgknight, makaiguy knows exactly what a Roku 3 is. You missed the point. Roku remotes either control the volume of TVs by sending IR (infrared) signals directly to the TV or via CEC. Either way, the remote has to be set up to control the TV. The Roku device itself doesn't have any way to control its volume; it's strictly the TV that controls the volume.
The Roku remote RC03 has no TV IR on board, originally the volume keys were strictly to control the volume of the headphones connected to headphone jack on the remote. Later an upgrade allowed the volume keys to control certain Tv brands via CEC, its wifi from the remote to Roku itself, which in turn sends CEC signal over the hdmi cable to the tv connected to it.
Thanks for the clarification, Edmond. It's been several years since I passed my Roku 3 on to a friend, so I've forgotten some details.
So I guess this means you don't program the Game Remote for the right set of control commands for the TV, but the TV must support CEC (Consumer Electronic Control) volume control, and have the CEC feature enabled.
Unfortunately many tv manufacturers call the CEC feature by their own proprietary names.
Some common ones:
• AOC: E-link
• Hitachi: HDMI-CEC
• LG: SimpLink or SIMPLINK (HDMI-CEC)
• Mitsubishi: NetCommand for HDMI, Realink for HDMI
• Panasonic: VIERA Link, HDAVI Control, EZ-Sync
• Onkyo: RIHD (Remote Interactive over HDMI)
• Philips: EasyLink
• Pioneer: Kuro Link
• Runco International: RuncoLink
• Samsung: Anynet+
• Sharp: Aquos Link
• Sony: BRAVIA Link, BRAVIA Sync, Control for HDMI
• Toshiba: CE-Link, Regza Link
Some other names shared by multiple manufacturers:
• Fun-Link, INlink, T-Link
On some TV's you may need to have the TV do a scan or search for connected CEC devices.
And finally, CEC specifies a number of controls that may be implemented, and even if a TV does support CEC it may not support all of them. My main living room set, for instance, is a 10+ year old Samsung that does not accept volume control over CEC.
