After programming the STB remote to control HDTV, the video functions operates, but the sound does not. Yes, the volume was programmed, i.e. press Cbl+SEL simult. , press Vol+ 'till light blinks twice. Indeed by moving the STB remote vol. up and down does move the cable volume bar on the screen, but the sound does not change. Why? The sound volume can only be changed through the TV remote.
They volume indicator you are seeing is meant to show the volume of content if it were to be recorded on the cable's dvr. This indicator has no effect on the volume of content as it is being watched. This feature allows recording of sound at a set volume even while the tv is off. It sounds as though you'll just have to use the volume buttons on your tv's remote, though you might want to try seeing if there is alternative set-up for those cable volume buttons.
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