Best answer by Erik Lillevik
I had the same problem. My TV is a Samsung UE46F6345SBXXE.
The way I fixed it was to go to (on the TV) menu/system/unit Control/Configure universal Remote and added a homecinema system specifying it is Connected to the Optical output. Void the Power on test as it is not of any significance here. I am using the Remote that came with the TV set.
Erik L. Norway