We still don't understand each other in statements, but that's not your problem.
You didn't offend me - cool.
But since the audio port on the TV generates a "light", and the cable was checked, because:
arab_123 wrote: the cable is also functional (when they were connected to a desktop computer everything worked),
and with KD everything is connected correctly, it can be assumed that from the technical side everything is ok, so this 1% can only be that something has not been turned on/started somewhere in the menu of one or the other device.
Please check in the tv menu if the SPDiF socket is enabled, and the tv sends a data stream to this socket (sometimes when this socket is activated, we automatically turn off the speakers in the tv), please also make sure that this port is is running in KD.
It is also worth connecting something else to the optical cable coming to the KD, e.g. a DVD with this port, and check if it works.
Modern TVs more and more often force you to specify the connected equipment under the TV, i.e. the TV must first detect what is connected to a given port, accept it, and only then allow you to run the appropriate functions for this port.
arab_123 wrote: and you started laughing
Not ridiculing, but I indicated in that statement that the information provided already allows you to exclude certain conditions, dependencies that mutually already indicate what can be rejected.
arab_123 wrote: Colleague Kocurek is probably the type of person to whom everything needs to be explained very carefully from A to Z and preferably "by book and definition" because otherwise it is incomprehensible.
The friend himself is not without fault.
arab_123 wrote: And I know that sometimes my translations may not be written in a great way, but I always thought that it's not about writing dot by dot and step by step when something doesn't work because the essence of the problem is the most important thing.
If you expect a precise hint, then present the problem as precisely as possible!
I, for my part, consider the exchange of opinions, which brings nothing to the subject, as closed.
Let's get back to the problem, arguing and teasing will not help anyone, and even discourage further statements.
I apologize to the moderators and users.
Kind regards.