Lost sound in non HD channels

[jonb2010]

hhhhhmmmm not sure what's happened as I haven't changed any settings but noticed that any SD channels don't have any sound.

All the HD channels are fine. Output from the VU+ is via HDMI to a Marantz amp and from there to the TV via HDMI.

Any ideas what I can check ?

[DrProzac]

Try changing downmix on then off again.
Sometime helps when I've had issues

Audio button then RED and RED again.

[jonb2010]

Yeah tried that and still nothing

[DrProzac]

Is it on all channels and or only some of them? And have you tried a re-scan?