Samsung PN51E6500EFXZA - Manual (Page 19)

the channel has been deleted from
the Added Ch. list.
3. Open the
Tools menu using your
remote.
4. Select the
Add . The message Added
the selected channel(s). appears, and
then select OK .
N The Add menu option only appears
when you select channels you have
deleted from Added Ch. .
N All deleted channels will be shown