Samsung UN55ES8000G E-Manual page 710

broadcasting true HD content.
ΠCable/Satellite subscribers: Try HD
channels from the channel line up.
ΠAir/Cable Antenna connection: Try
HD channels after performing an
Auto Program.
Adjust the Cable/Sat box video output
resolution to 1080i or 720p.
The picture is distorted: macro block error,
small block, dots, pixelization