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Monitor won't turn on 

If there's no indicator light displaying, check the power switch, check the power cord, and test 
the outlet. Unfortunately, this basic troubleshooting is the only way to try to fix the issue 
yourself. If this doesn't help the monitor turn on, then it will need service. 

o

 

 

1.

 

Check for a power switch. 

Some older monitors have a power switch on the back, similar to the power switch on the 
back of a desktop computer. This must be switched on before the power button on the 
front will work. 

2.

 

Test the outlet. 

Unplug the power cord for the monitor from the outlet and then plug something else in 
the same outlet (like a lamp) and make sure it's still working. 

3.

 

Plug the power cord back in. 

Remove the power cord from the monitor as well, and then plug it back in to both the 
outlet you tested and the monitor. 

It's pretty rare for power cords to go bad, but if you happen to have a spare one handy, 
you can try using a different power cord as well. 

 

Monitor is flickering 

A monitor that flickers, flashes, or blinks is never a good thing. Luckily, the most common cause 
for this is a connection issue or damaged cables. Follow this guide to determine if a new cable 
will fix the flickering, or if you need to examine the monitor's power source or refresh rate 
settings, or perform a system update. 

 

1.

 

Confirm the monitor's cable is connected securely and not damaged. 

Unplug the monitor's cable from the computer, inspect the pins for damage, and then 
reconnect it securely. Do the same at the other end of the cable where it plugs into the 
monitor. You can do this while your monitor is turned on, and see if the flickering stops. 

Summary of Contents for C27F398

Page 1: ...ower cord from the monitor as well and then plug it back in to both the outlet you tested and the monitor It s pretty rare for power cords to go bad but if you happen to have a spare one handy you can try using a different power cord as well Monitor is flickering A monitor that flickers flashes or blinks is never a good thing Luckily the most common cause for this is a connection issue or damaged ...

Page 2: ...many times a second your monitor displays an image Higher values result in a smoother picture with less flickering noticed by the eye however values which your monitor does not support can also cause flickering In rare cases you may feel more comfortable by reducing the value instead The most common refresh rate used for monitors is 60Hz and it is usually what most people feel comfortable viewing ...

Page 3: ...nal on the wrong one 2 Select the right source Most monitors will automatically select the source that is sending a video signal but sometimes the wrong one will be selected especially if multiple devices are connected to the monitor or you will need to manually select it You can change the source with the buttons on the monitor or in the menu See your user manual for instructions if needed Make s...

Page 4: ... a different device to the monitor This determines if the issue is with the monitor or not Make sure to use a cable you know works o If the monitor works with any other device then service is not required and the issue is with the original device If a firmware update is available for your monitor on the download center installing it may help increase compatibility with the original device o If the...

Page 5: ...for Make text and other items larger or smaller On a Mac navigate to System Preferences Displays Display Scaled o Text readability On Windows this is called ClearType Open the Start menu and search for Adjust ClearType text On a Mac this is called LCD Font Smoothing Navigate to System Preferences General These settings should be tweaked until you find the most desirable result You may prefer to ha...

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