Transporter not transporting

My Modwright Transporter seems to suddenly have lost it's voice. No output at all. Spotty for about an hour, then nothing. XLR and RCA output both silent. I'm controlling it through a Duet remote which shows that it's getting the wireless stream. I can change fron squuezebox to server and switch songs. Display shows the song is "playing". Everything downstream is good; LPs are fine. I've used two different line inputs on my pre-amp and nothing. NADA, nyet, zilch :-( Please help, the silence is unbearable.