I have replaced the tv, today,the new one is a samsung QE75Q8C
I have connected on the same way that last tv, samsung model 2016, UE75KS8000, throught digital output.
I have configurated universal remote for sonos, and it works, more or less , but only up 1 meter range from playbar.
with the same remote it is compatible for both models. worked perfectly on tv model samsung UE75KS8000.
do you know what has change that make imposible works. if I use the old IR remotes, works well.