Samsung UN46ES8000 E-Manual page 22

RF (Cable / Antenna) Connection (Troubleshooting)
Make sure the coaxial cable
securely.
is connected
Run Auto Prog_'sm to add available channels
to the channel list. Go to Channe-+ Auto
P_"og_"amthen select Cabe and make sure to
select the correct Cable TV signal type. There
are 3 options, STD, HRC and/RC. Most cable
systems use 3;TD.
Verify the antenna is positioned correctly.