AVID OMNI Mic/Instrument Input problems

[fazer]

I have an Avid Omni.  Anyone have a schematic or info on this unit.  Main I/0 works but the Line in is all that works on ch 1 and ch 2.  These have a preamp for 2 mics or 2 instrument inputs.  It has to be an electronic switch inside that selects mic input or DI or Line.  I can hear signal in the back ground when using the microphone or DI but its low and like crosstalk and never gets to the input so a switching chip of some kind is blown.   

I've reset the unit and also installed current firmware and they still don't work.  Any info you have would be helpful.  I understand Avid does not release schematics but maybe someone has info .

Thanks,  Michael