D2 missing one channel on AV input

[fastblackmerc]

I have a D2, bought it used about a year ago from stereo shop, everything was included. Worked great until a few weeks ago. I have an Omnifi 60GB music keg attached to the D2's AV inputs. I only get sound from the Omnifi on the left AV channel. All four speakers work fine using the radio or CD player. If I switch the red & white inputs I still get only the left side working. The right side doesn't work. Again this is only on the AV inputs. Any help is appreciated.

 

Thanks!