Hi tmazz, HAL, Barry and others.
Thanks for your suggestions.
What I did is the following.
Open and took pictures (See below)
Everthing look normal to me.
Tried the 5V walwart, nope, nothing.
Change cables, I have two (Different makes)
Nope, nothing.
Change the RCA inteconnects on my Schiit SYS, nope, nothing.
Then came that weird idea,
swaped the cable for the mouse with the one from the DAC
and guess what ?
Alleluia, work.
Now, the mouse is in place of the DAC and the mouse work,
why the DAC doesn't work in it's original location and worked fine for two years ? ? ?
Mystery that I'm affraid will never be solved.
I also downloaded my Nikon Coolpix pictures on the terminal where the DAC didn't work
and the download was done without any proplem.
Problem solve and now I'm enjoying my '' updated setup ''.
Guy 13
By the way :
While I was listening to music I plug and unpluged the walwart and I could not hear any difference.
Which means to me that the laptop can supply enough power to the DAC.