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Note: If your cable is damaged, it will need to be replaced. You should also inspect the
length of the cable, making sure that it is not pinched between anything, like the desk and
the wall, or under a chair leg. Finally, if you happen to have another cable easily
available, you can swap it in and check if the monitor still flickers.
2. Check the monitor's power source.
Flickering can also be caused by an unstable or inconsistent power supply. Try the
monitor in a different outlet, on its own circuit. If the flickering stops, there may be too
many appliances plugged into the original circuit, or an inconsistent voltage from the
outlet. Contact an electrician for further assistance.
Note: Appliances such as heaters and other high current devices feed power back into the
circuit and can make the monitor flicker. Keep these devices on a separate circuit from
your monitor. A UPS (Uninterruptible Power Supply) is another option to provide a
steady source of power to your monitor.
3. Set your refresh rate.
The refresh rate is how 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. Some monitors have higher values, such as 75Hz,
120Hz, or 144Hz. For the optimum experience, set this to the highest value your monitor
and connected device will support. If this is uncomfortable, try other settings until you
find one you like.
The method for adjusting your refresh rate will depend on the operating system of your
computer or connected device.
4. Perform all system updates.
Check for any updates to your operating system, update the drivers on your video card,
and check for any
If your monitor is still flickering, please visit our
For model LS27R750UENXZA or LS32R750UENXZA, you may not need service on the
monitor but you may need to replace the supplied Y cable (part code BN39-02467A). Please
contact us
for information on cable replacement.
firmware updates
for your monitor.
Support Center
to request service.
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