Hi,
Moved from Vu+ Uno (as no longer supported by Vix) to Vu+ duo4k, installed latest available image. Problem is with sound on some channels with MPEG sounds. After some periods of time watching channel sounds in MPEG format starts vibrate/cutting - it's like vibration. Only solution for it to stop tuner doing this is change channel up/down and back or select different sound from menu then go back to MPEG. Browsed internet about issue and noticed that Vu+ and some people report the same issue. Checked HDMI cable, replaced with different HDMI cable, used optical out for sound, checked with different TV. Problem exist still. Any ideas? Thanks