Hi and welcome to JustAnswer,
Thank you for the question and your patience. Should you still need assistance for information purposes only...
Initially, is the Samsung UE46F7005STXXE directly connected to an antenna
or cable feed? ...or is there a PVR or satellite
receiver used with the TV ?
The Digital Audio Out (Optical) connection would only work if the TV is receiving digital TV channels
with 5.1-channel audio; i.e. through an antenna or direct cable feed connections. If the source is external such as a Blue-ray player, PVR, satellite receiver or similar, then the optical connection would not work.
I realize that the above information may perhaps be not what was expected. Unfortunately, it is a design limitation; sorry for having to be the bearer of bad news.
Alternatively, consider using the TV's headphone jack (if so equipped). A 3.5mm to 2 X RCA cable would be needed to connect to either the amp's TV or AUX 1 input RCA jacks.