How to connect to a Samsung tv
If you have Samsung wireless and need to pair them, then select sound, addition setting arrow down to Bluetooth ( may not be visible until you arrow down). Follow those instructions.
below this you will find how I set up old headphones.
I have a Samsung SU 4K, I also have an old wireless head phones. I did not want to buy expensive Bluetooth.
how did I make these work. First I purchased a digital optical convertor for $20. Since my headphones are 2 channel, I connected the base (red/white) to the convertor. Then I had to access Samsung menu audio. The Samsung TV has the manual built into TV terrible. Since I did not want the TV speakers off I had to find how to enable the output to headphones base. Select sound from menu , then additional settings , set audio format to PCM, also HDMI to PCM.