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“No Connection, Check Signal Cable” displays on screen.
Cause Solution
Monitor video cable is disconnected. Connect the video cable between the monitor and computer.
CAUTION: Ensure that the computer power is off while
connecting the video cable.
“Out of Range” displays on screen.
Cause Solution
Video resolution and refresh rate are set higher than what
the monitor supports.
Restart the computer and enter Safe Mode. Change the
settings to a supported setting then restart the computer so
that the new settings take effect.
Vibrating or rattling noise coming from inside a CRT monitor when powered on.
Cause Solution
Monitor degaussing coil has been activated. None. It is normal for the degaussing coil to be activated
when the monitor is powered on.
Clicking noise coming from inside a CRT monitor.
Cause Solution
Electronic relays have been activated inside the monitor. None. It is normal for some monitors to make a clicking noise
when turned on and off, when going in and out of standby
mode, and when changing resolutions.
High pitched noise coming from inside a flat panel monitor.
Cause Solution
Brightness and/or contrast settings are too high. Lower brightness and/or contrast settings.
Solving Display Problems 157