No audio from RCA plugs - no clue on what the baseboard is

freaky
Hi there,

I was asked to investigate some audio issues. We have a friendlyarm image
that boots and starts playing music. On the SDK baseboard we actually hear
sound, but the SDK board uses mini jack plugs.

We have another device where it's supposed to run on in the end - the only
outputs here (if they are outputs... it says so on the enclosure but have
no specs on the baseboard whatsoever) are RCA plugs (a white and a red
one).

If I plug these into the TV and switch to AV/3 on the TV there's no audio
whatsoever. I see mplayer running just fine.

Any ideas? Not sure where to start, alsa sees the regular MINI6410
soundcard, tried unmuting everything with alsamixer (there's an unusual
amount of input/outputs - at least never seen that many on a regular PC -
whilst that has much more actual connectors ;)). But it makes no
difference.

Kind regards