I have an older Philips dvd 5960 player. Do I have to go into the menu to direct it to output the signal for the digital coax cable out? I am having real problems with my diy gear. I am getting nothing, Philips dvd>Sheldon Stokes DAC>Pass diy preamp>Phase Linear amp> speakers. I am trying to troubleshoot it. I took out the dac and preamp in the set up, ran standard rca connects from dvd player to tube preamp to amp. That works. And when I run the dvd player to the dac, I hear that click, but nothing. I can only run coax digital into the dac. It used to have optical input, but my friend deactivated that. :0( Ideas?