If you don't have a tv code programmed in the volume kays aren't blank, what's there is IR commands that when the directv receiver sees them it puts up warning to program a tv code into the remote. So the volume keys need a tv code programmed in to work at all.

Once there is a tv code, then the tv volume is punch through to all devices and is in the way, but that can be remedied. So with tv code in, yours or any just that there has to be one, to get the av volume in just one device:

1. av1 or av2
2. press and hold MUTE & SELECT for two blinks, release
3. enter 9 9 3
4. press VOL down

If you want the av volume in ALL devices do the following instead:

1. av1 or av2
2. press and hold MUTE & SELECT for two blinks, release
3. enter 9 9 3
4. press SELECT

If you want to restore the tv volume in just the tv device:

1. tv
2. press and hold MUTE & SELECT for two blinks, release
3. enter 9 9 3
4. press Vol Down