Odd audio on pbs on 125

[southofi-10]

I'm getting bad audio on pbs thats on 125w,12180H30000,usually colorbars during the day .
It sounds almost like a computer generated noise,which is constant.This noise is always present with the colorbars,and seems to have rolled over into the programming. I get no clear audio besides the noise.
Could this be a problem with my az box?Never had a problem like this before,and I'm thinking it's just a bad audio feed.

 

[turbosat]

Maybe your azbox is coughing on the AC-3 audio. Can't say I'm familiar with those, or whether they all do Dolby audio out of the box or not. I'd compare the audio PIDS with a known good list and see if its finding the correct ones for that channel. If that don't help, and you depend on the Azbox to decode the dolby ( does it? ) then maybe you will have to rely on a separate audio amp that does Dolby sound.