Samsung UN40F6300 E-Manual page 80

Antenna (Air/Cable) Connection
Make sure the coaxial cable is connected securely.
The TV is not receiving Run Auto Program (Broadcasting > Auto Program) to add all available channels
all channels, to the channel list.
Verify that the antenna is positioned correctly.
Navigate to Caption (Broadcasting > Caption) and change the Caption Mode
There are no captions on
digital channels, setting.
Some channels may not have caption data.
The compression of video content may cause picture distortions. This is
The picture is distorted, especially true with fast moving pictures such as sports and action movies.
A weak signal can cause picture distortions. This is not a problem with the TV.
PC Connection
The "Mode Not
Supported" message
appears.
Set your PC's output resolution so it matches a resolution supported by the TV.
The video is OK but : If you are using an HDMI connection, check the audio output setting on your PC. :
there is no audio. If you are using a DVl to HDMI cable, a separate audio cable is required.
Networking
The wireless network
connection failed.
Make sure the TV is connected to a wireless IP router.
The Software Update
over the network has
failed.
Check the network connection status.
If the TV is not connected to a network, connect to a network.
The upgrade will not proceed if you already have the latest software version.