Norcent lm560 Mode D'Emploi
Wrong or abnormal colors
If your monitor shows any abnormal or missing any colors (red, green, blue),
please check the video cable and make sure it is securely connected. Loose
or broken pins inside the cable connector could cause improper connection.
or broken pins inside the cable connector could cause improper connection.
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You can also connect the monitor to another computer to verify if it is monitor
problem or computer problem.