Optical audio cut every 3-5 seconds (Q90R)

[Opkvitne]

I recently bought a new Samsung TV (QE55Q90RATXXC) and since it doesn't have an analog audio output I decided to buy a miniDAC adapter for my old B&O receiver from the 80s. Don't worry, I took
the receiver in for a service couple of months ago. The adapter is ment to convert the signal from the optical output from the One Connect box to a phono signal for the analog receiver. The miniDAC adapter works fine until about 30 minutes of playing music from the Spotify app or playing movies from Netflix. Everya 3-5 seconds the sound is gone for 1 second.

It's like the sound i "chopped" for a tiny moment. But, if I change the apps between Netflix and Spotify, the problem is gone for a while. Even if I turn my television tuner on the same problem occurs. But then, while this tuner is on, I get to run self diagnosis in Settings > Support > Self Diagnosis > Start Sound Test, and the example music from the test is amazingly clean and the sounds isn't cut out for a short moment.

I also figured out that the Expert Settings already is set to PCM, but I only have that one setting available in the Sound Settings.

I have also tried the same miniDAC adapter with my old Samsung TV from 2012 (UE55ES6305) with two different optical cables and the old tv, the old receiver and the miniDAC adapter worked perfectly.

So now I wonder if I can get some advice from you regarding this annoying issue. Is it somehow possible to transfer the sound signal from the One Connect box to the adapter in any other way?

[gazzapap]

Good morning
I solved !
i have a samsung q85 stuttering connected to my su-9 smsl dac
just change the dpll filter from 7 to 9 on the su-9 and so jitter is no longer a problem!
this also applies to the new SMSL VMV D1SE
it was enough to know before ....

[Tc0x]

Help! I have the same issue. Thank you. 

[Tc0x]

Any update? I have the same issue!

[Anonymous_P]

Unfortunately not... there is no solution and I am astonished about that. This is the reason why Samsung is so reluctant in providing useful information. 

The issue is related to the ToSlink (optical cable) protocol which has a variable jitter time parameter by standard for negotiation. The two deviced don't match the jitter time.

I solved the issue by putting a pre amp inbetween, of couse with an audio chip wich has a negotiable jitter for the ToSlink.

Best of luck!

[Stephenatohi]

Hello! Same problem here. Which pre-amp did you put in between?

[rcrocky]

Same here with 55QN90C.

Amp: NAD d3045

No solution. Send back the TV and the amp as well, if you still can.

[wyup]

Hey people, I have a curious tip on this problem. I also have micro audio dropouts on toslink every 2-3 seconds on two different dacs with my Samsung S95B. The curious thing is that when I remove the aerial antena cable dropouts go away! If I plug it again, dropouts come back after a few seconds. It seems to be an activation of the tv tuner on the operative system on the tv that introduce jitter on the audio clock. It is clearly jitter from the tv by its running processes.

I have found an option on the service menu that might deal with this, but I don't dare change it by fear of bricking my tv: it says something like Engineer menu > CX clck auto (it is off by default). There are also HRT Timer options that might have to do with this. (It is the multimedia clock sync)