Virus TI keyboard, no sound. Options to mend?

[wildatsun]

hi Folks
Got a broken Virus TI here, belongs to a friend, it powers up and the controls work etc, but no sound, I also tried the digital ouput, still nothing.

Whats the worst case scenario here, main board gone and beyond repair, if so are they available and what cost?

Is it worth sending the machine (or boards by themselves) to anyone other than Access ? Any known repairers for these in UK?

Cheers
Will