Cannot get HDMI signal

[Rudy81]

After my previous attempt to get SnakeOil to work  I decided to start fresh on a different machine in hope of getting the OS to work.  I am now using a NUC5CPYH.  Fresh install on an SSD.  Snake Oil install and update to 1.1.8 went well.  I then added Jriver 25 and 26. All installs worked perfectly.  In my previous attempt, I could not get the alsamixer to retain settings.  That is no longer a problem and settings are now retained in this machine. 

My problem is that I cannot get HDMI to send a signal to the pre/pro I am using.  I do not think it is a machine issue since Daphile does work via HDMI on my system. I would really like to use SnakeOil for my audio system and would prefer HDMI to be the source.  I am about to go out and buy an optical cable to see if that end of the hardware works. 

I would greatly appreciate any help in getting the HDMI signal path to work.  I am not proficient in Linux, but can follow directions. That is how I loaded Jriver. Thanks for any help.