Hi, all. Don't use my DVD that often since I have three DirecTV HR10-250 HDTV DVRs. In fact, I've probably used my DVB318 about four times since buying it last October. It has the upconversion over component firmware. Here's my problem: I just got the third HR10-250 this week and needed the optical audio port on my Onkyo receiver that I was using for the DVB318 so I could hook up this HR10. My Onkyo only has three Toslink inputs on the rear. NBD since the DVB318 has coax audio output. I hooked the DVB318 to the coax input, made the changes in the Onkyo setup, and don't get any sound. I've tried the following: change the coax input to each of the three coax inputs on the Onkyo and made the changes in setup; got a new cable; tried different DVDs; confirmed the DVB318 is set to Bitstream and 96kHz; confirmed the DVD soundtrack was good by switching the DVB318 back to Toslink; confirmed the Onkyo's coax inputs work by hooking up another DVD player by coax audio; confirmed the cable was good by hooking it up to the other DVD player. I'm out of ideas. Has anyone heard of the coax audio not working on the DVB318? Am I missing something in setup? If I send this in to Zenith for service (I'm out of the labor warranty but still in the parts warranty) am I going to lose the upconvert over component? Would I be better off bringing it into an authorized Zenith repair center? Thanks for taking the time to read this and for any suggestions.