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LG Monitor - Troubleshooting Lines on the Screen

  • Troubleshooting

At a Glance

Lines appearing on your screen can be caused by an improper connection, faulty cable, or in rare cases, an internal problem with the monitor.

Try This

  1. Remove the Connected Cable

    If there is an internal failure with the monitor, the line(s) will still appear on the [No Signal] screen.

    image showing tha tthe line appears on the no signal screen as well on the normal display
  2. Disconnect and Reconnect the External Device

    Unplug the cable of the external device connected to the monitor for 3 seconds then plug it back in. This will refresh the connection and resolve any communication issues.

    image showing he connection cable being disconnected and reconnected
  3. Switch to a Different Input

    If applicable, switch to a different input source to see if the lines are removed.

    image showing a different input being selected
  4. Replace the Connected Cable

    Cables can become damaged or worn over time and need replacing. Swap out the cable and retry.


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If the problem continues after trying the above, the unit will require service. Please reach out to our 24/7 Chat Support for further assistance.

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