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[LG TV Screen] The screen flickers and then no screen appears.

Troubleshooting TVs 31/08/2023

If the broadcast signal becomes weak, you may experience screen flickering, stuttering, or breaking.
In such cases, it is recommended to contact your broadcast service provider for signal check.

Causes and Symptoms

  • My screen flickers and then blackens while I am watching TV using an antenna.

Try this

How to identify the digital broadcast signal strength

[2022 WebOS22], [2021 WebOS 6.0]

Press the setting button on the TV remote, select [All Settings] → [General] → [Channels] → [Channel Tuning] → [Manual Channel],
and then select the type of connected antenna.

Turn on the TV and press the [Settings] button on your TV remote.
Select [All Settings] in the [Settings] menu.

Press the remote control setting button to select all settings
1. Select [Channels] in [General].
Select a channels in General
2. Select [Channel Tuning].
Select Channel Tuning from Channels
3. Select [Manual Tuning].
Manual Tuning selection in channel Tuning
4. Select the antenna connected (select Cable TV if you are using cable TV service).
Select Cable DTV in Manual Tuning List
5. You can see the signal strength and quality of the channel you are watching.
Cable DTV signal strength and quality display image

How to check signal strength in previous WebOS versions

Press the setting button on the TV remote and select [All Settings] → [Channels] → [Channel Tuning] → [Manual Channel] → [Cable DTV].

Turn on the TV and press the [Settings] button on your TV remote.
Select [All Settings] in the [Settings] menu.

Screen to enter all settings after pressing the setting button on the remote control
1. Select [Channels] → [Channel Tuning] → [Manual Channel] → [Cable DTV]. (Select when using a cable TV)
Manual channel setting and cable DTV selection
2. You can see the signal strength and quality of the channel you are watching.
check cable DTV signal strength

※ If the signal strength changes by more than 50% or the signal quality changes by more than 30%, it indicates a weak broadcast signal.
In such a case, please contact your property management office or broadcast service provider.

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

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