Hi thanwu,

Bugbitten's advice is good. Go into the Philips TV menu and make certain that you enable "coaxial digital audio out". If you just set "line out" it might enable the analog audio line outputs and not the digital audio output.

On my Scientific Atlanta HD8300 tuner/DVR, every so often I have to go into its menu and re-set "Dolby Digital Out", otherwise I don't get the Dolby Digital 5.1 soundtrack broadcast with many HD shows.

Regards,

Alan Lofft,
Axiom Resident Expert (Retired)