DaveB:BazNZ: I also continue to get Audio dropouts through my Coax output ! But my HDMI is fine ! Not Signal as pete suggests it is the ET box that has the problem.
Some of the cheaper unaccredited imports are not Dolby Laboratories certified and use a non standard audio chip. Is this ET unit certified? If so, it HAS to show the Dolby Digital Logo, if not there will be no logo and I suspect, the root of your problems.
Cheers Dave B
While a good thought, the major problem occurs on the C4 channel and that is not broadcast in DD or anything special AFAIK.