SU-1 DAC + Sonos Connect or TV not working

[lixi]

Hello: )

I have an issue with my S.M.S.L SU-1 DAC.

I have the following devices:
- Sonos Connect Gen2
- Bluetooth Receiver: Advance Paris WTX-1100
- TV: LG OLED55B29LA
- DAC: S.M.S.L SU-1
- Toslink Digital Audio Cable
- Cinch Coaxial Audio Cable

The following setups work all the time:
WTX1100 -> Toslink Cable -> SU-1
WTX1100 -> Cinch Cable -> SU-1
Sonos Connect -> toslink or cinch cable and DAC (I dont know the type) at my friends place

--> So the cables, Sonos and SU-1 are working properly in principle.

BUT, when I try the following setups, i have issues:
Sonos Connect -> Toslink Cable/Cinch Cable -> SU-1
The SU-1 is blinking for most of the time and I have no sound. Sometimes (like every 5-10 minutes) the LED is on all the time. In that case the setup works, I can hear sound. But only for half a minute or something like that. Afterwards it starts blinking again and no sound.

TV -> Toslink Cable -> SU-1
The SU-1 is blinking all the time and I have no sound.

Has anyone an idea, what could be a reason for that? All components work in general. But the SU-1 does not work with the TV or Sonos.

Thanks in advance,
Felix

 

[Nutul]

1. what exactly do you mean with "Digital Cable"?
2. what exactly do you mean with "some random cable and DAC at my friend's place"?

 

[lixi]

Ah, sorry
1. Amazon Basics Toslink optical audio cable
2. It is a while ago, that I tested the sonos connect there. I am not sure if it was a toslink optical audio cable or a cinch cable. And I dont know which DAC it was. But at least I know 100%, that I used the digital outputs of the sonos, and it worked fine

(I gonna update my first posting with that info)