Samsung UN55ES8000G E-Manual page 54

the image is clear.
N
Select the channel, and then select
Fine Tune.
N
Fine tuned channels that have been
saved are marked with an asterisk "*"
on the right-hand side of the channel
number in the channel banner.
N
To reset fine-tuning, select the
channel, select
select Reset on the
Fine Tune, and then
Fine Tune screen.