Causes and Symptoms
- The screen flashes while watching shows on cable or public-access television.
- I can't see the screen while watching TV on cable/public-access television, and it shows me the "No Signal" message.
- Some channels flicker or don’t show anything when I am watching cable/public-access television.
You may experience screen abnormalities if the antenna is damaged or the connection is weak.
If the broadcast signal is unstable, the screen of some channels may flash or not show anything.
Try this
Please check the antenna connection status.
➔ You may experience screen abnormalities if the antenna is damaged or the connection is weak.
How to check the signal strength and quality with TV menu
-
[2022 WebOS22], [2021 WebOS 6.0]
Press the
button on the remote control and select [All Settings] → [General] → [Channels] → [Channel Tuning] → [Manual Channel] → [Cable DTV]
-
[2020 WebOS 5.0] or before
Press the
button on the remote control and select [All Settings] → [Channels] → [Channel Tuning] → [Manual Channel] → [Cable TV].
[2022 WebOS22], [2021 WebOS 6.0]
1. Press the 
button on the remote and select [All Settings].
2. Select [General] → [Channels].
3. Select [Channel Tuning] → [Manual Channel].
4. If you’re watching cable, select [Cable DTV].
5. You can see the signal strength and quality of the channel being viewed.
[2020 WebOS 5.0] or before
1. Turn on the TV and press the [Settings] button on the remote control to select [All Settings].
2. Select [Channels] → [Channel Tuning] → [Manual Channel] → [Cable TV]. (Select when using a cable TV)
3. You can see the signal strength and quality of the channel being viewed.
This guide was created for all models, so the images or content may be different from your product.
