I go through the "learn" steps to program my directv remote to control the up/down volume and mute on my sound bar. I folllow the steps exactly and get no errors. However, all three buttons (up volume, down volume and mute) work to increase the volume. The mute and down volume do not do what they are supposed to do. They all just increase the volume no matter which of the three buttons I use.
Any advice? Thanks!