Yes, this has left me puzzled. Looks pure software glitch!Glad that you are not facing the issue anymore. 1080p doesn't make sense anyway, as we don't have any channels at that resolution. However, I wonder how the resolution setting had affected the audio! Strange!!
Is it working fine till now with no problem?? I'm also facing same issue since two days.Something strange! Issue seems to have resolved. Technician visited and I could reproduce this issue. But he changed resolution back to 1080i from 1080p (I had set it that way). Since then, I am not able to reproduce this. As per technician, this is a known issue for some STBs and will get resolved with firmware updates. He has advised to keep resolution to 1080i only. I really hope I don't face this again!