Samsung HP-P5071 Owner's Instructions Manual page 72

Use fine tuning to manually adjust a particular channel for optimal reception.
Press the MENU button. Press the A or T button to
select "Channel", then press the ENTER button.
Press the A or _ button to select "Fine Tune", then
press the ENTER button.
Press the _ or _ button to adjust the fine tuning.
To store the fine tuning setting in the TV's memory,
press the ENTER buttom (A star icon(*) will
appean) To reset the fine tuning to "0", press the T
button to select "Reset", then press the ENTER
button.
Press the MENU button to exit.
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