NVIDIA Shield to Samsung Q850 Sound Bar to Samsung QN75Q7FNAFXZA suddenly stopped finding the input device

[userlDJpwRdFWU]

I have a Samsung QN75Q7FNAFXZA TV, Samsung Q850D Soundbar and NVIDIA Shield TV model P3430 and the Shield is connected to the soundbar and the soundbar to the TV. The TV no longer receives a signal from the source soundbar (just stopped working no changes).  I did NOTHING, it just stopped working one day.

If I connect the Shield directly to the TV it works.

I tried other cables

I connected to a different TV

I did all the reset steps in the manual

What are possible problems and solutions?