Hi I just purchased this unit used and it doesn't seem to be working properly. The person I bought it from said they would take it back so thats not the problem. The problem is that I can't get a digital signal into or out of the adc. The ADAT optical seems to be broken. I should note that at no time has there ever been light coming out of the toslink cable. The a/d clock I set to internal and send to the d/a input. The d/a inputs clock is set to "input". No signal is sent. Neither the output analog leds light up nore is there light coming from the cable. Anybody have any ideas on this? Thank you for taking the time to read this.

Regards,