15
Troubleshooting
If there are any problems during operation, please refer to the following table. If problems cannot be
solved as indicated under Solution, please contact your manufacturer.
Problem Possible causes Solution
Product does not
work
• No signal
• Interrupted power supply
• Check the power indicator at the back,
if the light is on, check the signal input; if
the light is o, check the power supply
Dim image • Brightness and contrast too low • Adjust the brightness and contrast
No Sound • Headphone/ Speaker not
connected
• Computer audio setting wrong
• Check the connection of head phone/
speaker
• Check the audio setting of computer
Wrong or abnormal
colors
• Loose or broken pins in the cable
connector
• Check the D-Sub or HDMI or DP cable
to make sure it is in good condition and
securely connected
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