I'm not sure where the problem lies, so I'll try this forum first.
I have a Vizio 37" LCD TV hooked up to my Comcast Moto 6412 III HD PVR via HDMI cable. I get audio and video okay, but when I try to use the Comcast Remote (it's black - not silver), it does nothing. I have to use the TV's remote to change the volume level - yes...I'm using the TV's speakers...don't kill me! The Comcast remote controls the volume if I hook up the tv via the Component Cables and even the Composite Cables to my old tv without "modern" hook ups.
Has anyone run into this problem before? Is this even a problem? Or is it normal with HDMI? I've never used HDMI before so I'm new to this.