Samsung PN51E490B4F E-Manual page 177

Issues
The picture is distorted:
macroblock error, small
block, dots, pixelization.
Color is wrong or missing.
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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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