I have suddenly developed a problem with my Humax Foxsat HDR / surround sound setup. I have no audio via the optical output when tuned to the BBC HD channel - although audio via HDMI (straight into the TV) is still ok.

Sound from other channels are ok via optical - so I think the optical cable and amp are both good.

I've also tried:-[LIST][*]Retuning[*]Factory reset[*]Retuning using a different postcode in case there happened to be any regional problems with my BBC HD broadcast.[/LIST]
...but the problem remains.

Any advice welcome.

The audio output from optical is Dolby Digital rather than PCM. Are you sure your amp has dolby digital decoding ?

Thanks Graham - that's it sorted now.

My amp had accidentally been set to PCM - normally it's set to 'Auto' decode - I'm going to blame the kids for that one