And Samsung was hit and most miss here. I'm going with no since it didn't work for you.
Samsung HDTV's for all the models I check disable the TV speakers when we plug in the headphone jack so it's not as if we can plug some audio sender in and fix this.
Sorry but this area is a minefield of issues. If you are in the USA, try 1800SAMSUNG to ask if your TV might work.
Is it possible to send the audio signal of my (no smart) tv set to my Samsung Multiroom speakers and if yes, how?