“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 |
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Brightness and/or contrast settings are too high. | Lower brightness and/or contrast settings. |
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268 Chapter 10 Troubleshooting Without Diagnostics