Chapter 7 Troubleshooting - ASROCK CL25FF User Manual

Chapter 7 Troubleshooting

Problem and Question
Power LED is not on
No signal
Picture is fuzzy
Picture bounces or a wave
pattern is present in the
picture
The power LED is ON (Blue)
but there's no video or no
picture.
Missing one of the primary
colors (RED, GREEN, or BLUE)
Picture has color defects
(white does not look white)
Poor brightness or contrast
Unable to open OSD menu.
Possible Solution
• Check if the Power button is pressed and the
monitor is power on.
• Power Cord should be connected.
• Check that the video cable is properly connected.
If the connector is loose, tighten the connector's
screws.
• Check the video cable's connection pins for damage.
• Adjust the Contrast and Brightness Controls.
• Move electrical devices that may cause electrical
interference.
• Computer Power Switch should be in the ON
position.
• Computer Graphics Card should be snugly seated in
its slot.
• Make sure Monitor's video cable is properly
connected to the computer.
• Inspect Monitor's video cable and make sure none
of the pins are bent.
• Inspect the Monitor's video cable and make sure
that none of the pins are bent.
• Adjust RGB color or select color temperature.
• When the brightness of the screen lowers after
being used for a certain period and the function
of the display is affected, send it to our authorized
service center for repair.
• Turn off your monitor, unplug the power cord and
plug it back in, then power on the monitor.
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