Samsung DBJ Series User Manual page 141

Screen issue
The brightness and color do not look normal.
Lines (red, green or blue) are displayed on the screen.
The display looks unstable and then freezes.
The screen cannot be displayed in full screen.
Sound issue
There is no sound.
The volume is too low.
Go to Picture and adjust the screen settings such as
Sharpness.
Go to System and adjust the Eco Solution
Reset the screen settings to the default settings.
These lines are displayed when there is a defect in DATA SOURCE DRIVER IC on the monitor.
Contact a Samsung Service Center to resolve the issue.
The screen may freeze when a resolution other than the recommended resolution is used or
if the signal is not stable. To resolve the issue, change the PC resolution to the recommended
resolution.
A scaled SD (4:3) content file can cause black bars on both sides of an HD channel screen.
A video with an aspect ratio different from the product can cause black bars at the top and
bottom of the screen.
Change the screen size setting to full screen on the product or source device.
Check the connection of the audio cable or adjust the volume.
Check the volume.
Adjust the volume.
If the volume is still low after turning it up to the maximum level, adjust the volume on your
PC sound card or software program.
Picture Mode, Color, Brightness
settings.
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