Hi all. I have a DSTV Explora device linked to a smart TV. I had to reformat the hard drive of the Explora and now, when using the variable setting on the DSTV remote to change the volume on the TV, it shows the volume, but when it changes the volume, the sound stops. When I mute via the DSTV remote, the sound comes on again, but the moment I try to change the volume, the sound stops (not mute, but just no sound). Could anyone assist in sorting this out?