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3.3
Troubleshooting (FAQ)
Problem
Power LED is not ON
The power LED lights amber and
there is no screen image
Screen image is too light or dark
Screen image is not centered or
sized properly
Screen image bounces or a wave
pattern is present in the image
Screen image has color defects
(white does not look white)
Screen image is blurry or fuzzy
No sound or sound is low
(VB178T/S , VB198T/S)
2-7
Possible Solution
• Press the
button to check if the monitor is in the
ON mode.
• Check if the power cord is properly connected to the
monitor and the power outlet.
• Check if the monitor and the computer are in the
ON mode.
• Make sure the signal cable is properly connected
the monitor and the computer.
• Inspect the signal cable and make sure none of the
pins are bent.
• Connect the computer with another available
monitor to check if the computer is properly working.
• Adjust the Contrast and Brightness settings via
OSD.
• Press the
button for two seconds to
automatically adjust the image (for VGA input only).
• Adjust the H-Position or V-Position settings via OSD
(for VGA input only).
• Make sure the signal cable is properly connected to
the monitor and the computer.
• Move electrical devices that may cause electrical
interference.
• Inspect the signal cable and make sure that none of
the pins are bent.
• Perform All Reset via OSD.
• Adjust the R/G/B color settings or select the Color
Temperature via OSD.
• Press the
button for two seconds to
automatically adjust the image (for VGA input only).
• Adjust the Phase and Clock settings via OSD.
• Ensure that the audio cable is properly connected to
the monitor and the computer.
• Adjust the volume settings of both your monitor and
computer.
• Ensure that the computer sound card driver is
properly installed and activated.
Chapter 3: General Instruction
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