Samsung LT27A750ND-ZA - Manual (Page 269)

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English
Issues Solutions and Explanations
There is a dotted line on the edge
of the screen.
• If the picture size is set to Screen Fit , change it to 16:9 .
• Change the cable/satellite box resolution.
The picture is black and white.
• If you are using an AV composite input, connect the video cable
(yellow) to the Green jack of Component Input 1 on the TV.
When changing channels, the
picture freezes or is distorted or
delayed.
• If the TV is connected to a cable box, try to reset the box. (Disconnect
and then reconnect the AC cord and wait until the cable box reboots.
It may take up to 20 minutes.)
• Set the output resolution of the cable box to 1080i or 720p.