Sudden problem with DigiOne Signature after years of trouble free operation

On returning from vacation my DigiOne signature is no longer generating any output on the BNC connector.  It is running DietPi and is up-to-date at 9.6.1, the current release (I have reflashed the SD card just to be sure, no change).  This unit has worked flawlessly for 6 years as a Roon end point playing streamed content at all resolutions.

I am able to ssh to the unit and access the GUI via http.  It is visible in Roon and I can enable it and play to it, Roon indicates that playback has started but the DAC doesn't lock onto any signal.  After about 30 seconds Roon skips to the next track but still no audio, rinse and repeat.  Comparing the Status screen with my working DigiOne (non Signature) the only difference I can spot is the enclosed:

Googling only turns up very old hits or problems with Volumio.

Any suggestions?

@rabassupport Would you be able to help me here?  Thanks in advance!

23 hours ago, struts said:

@rabassupport Would you be able to help me here?  Thanks in advance!

Sent direct message, please check and reply.

Just posting for anyone who finds this thread in the future and wonders how it ended.  I received excellent support from @rabassupport (thank you!) who suggested some troubleshooting steps.  It turns out the culprit was the Uptone LPS-1 which has been powering the "clean" side without any problems for the last six years but which now seems to have developed a fault.

@Superdad The LED on the LPS-1 is now glowing stubbornly red and doesn't cycle any further.  It is powered by the original Mean Well SMPS which is pushing out 7.5V to spec and powers my LPS-1.2 without any problems.  Any troubleshooting you can suggest or is it likely terminal?  

10 hours ago, struts said:

The LED on the LPS-1 is now glowing stubbornly red and doesn't cycle any further.  It is powered by the original Mean Well SMPS which is pushing out 7.5V to spec and powers my LPS-1.2 without any problems.  Any troubleshooting you can suggest or is it likely terminal?  

Sadly, it sounds like your 6+ year old original LPS-1 has given up the ghost.  Very sorry about that. 

Do feel free to contact us directly, but repair of those units is no longer possible.