The NAXA NHS-7008 Sound Bar was not listed on the AUX sub-menu under Amplifiers, Receivers, or Auxiliary equipment so I went to the learning mode. I attempted to program VOL+, VOL-, and MUTE into the 54.0. It appeared to accept the codes, so I pressed SAT to lock them in. But no control was effectuated. (The technician tried the same thing and he had the same non-results) Does anyone know the codes?