Samsung UN19D4000ND E-Manual page 182

Issues
The picture is
distorted: macroblock
error, small block,
dots, pixelization.
◀
Color is wrong or
missing.
Solutions❑and❑Explanations
●
The compression of video contents may cause picture
distortion, especially in fast moving pictures such as
sports and action movies.
●
A weak signal can cause picture distortion. This is not a
TV problem.
●
Mobile phones used close to the TV (within 3.3 ft)
may cause noise in the picture on analog and digital
channels.
●
If you're using a Component connection, make sure
the component cables are connected to the correct
jacks. Incorrect or loose connections may cause color
problems or a blank screen.
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