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[LG TV Screen] The screen is jittery when connected to the PC.

Troubleshooting

Causes and Symptoms

  • You may have set the display resolution and external inputs improperly.
  • The HDMI cable connection between the TV and the external PC may not be in good condition.

Try this

Changing PC resolution

Windows 10

Right-click on the Desktop, select Display settings, and change the resolution in Display resolution.
Please select the recommended resolution in Display settings.
If the screen problem persists with the new resolution, change the external input settings.

right-click on the PC screen to set up the display
change resolution and multi-display in display settings

Windows 7 or higher

If the resolution setting is incorrect when the TV is connected to a PC, it may result in symptoms like screen cut-off and enlarged screen.
In this case, set the optimal resolution by consulting the TV user manual.
Right-click on the Desktop, select Screen resolution, and change the display resolution.

right-click on the PC screen to set the screen resolution
changing screen resolution

Changing external input settings [for products released in 2018 or earlier only]

① Turn on the TV and press the [External Input] button on your TV remote.

② Select [All Inputs].

selects the all input from the external input with the TV remote control

③ Under [All Inputs], select [Edit Icon].

selects Edit Icon for External Input List

④ Under [Edit Icon], set HDMI to PC.

changes to PC by editing the icon in the external input list

Does the problem persist even after the resolution or external input is changed?

➔ Try replacing the HDMI cable.

Checking the HDMI cable
It is recommended to use an authentic HDMI cable to connect your TV with a PC.
Using a non-certified HDMI cable may lead to communication errors, resulting in symptoms like a jittery screen and shaking screen.
Authentic HDMI cables are labeled or engraved with the "High-Speed HDMI" mark. Otherwise, the cable is likely not certified.
In this case, replace the HDMI cable with an authentic one.
Check if your HDMI cable has the “High-Speed HDMI” label or engraving (HDMI 2.0 or higher version is recommended).
the specification of the HDMI cable

This guide was created for all models, so the images or content may be different from your product.

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