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[LG TV Screen] Colors bleed.

Troubleshooting

Color bleeding may be observed in certain broadcasting channels due to poor reception of broadcast signals.
If you experience symptoms like color bleeding and color overlap, particularly on a specific channel,
it is advisable to contact your set-top service provider for further assistance with the signal check (cable TV, Skylife, IPTV, etc.).

Causes and Symptoms

  • The broadcast signal strength is weak.
  • The HDMI cable connection between the TV and the set-top box may not be in good condition.
  • Ultra Deep Color is disabled.
color bleeding example screen

Try this

Does color bleeding occur across all channels?

➔ Go to [Settings] and start [Picture Test] to check if the picture works normally.

Running [Picture Test] in the Settings menu

webOS 5.0

Press the setting button on the TV remote and select [All Settings] → [Customer Support] → [Additional Settings] → [Picture Test].
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 [Customer Support] and then ② [Additional Settings].
Additional setting menu entry screen in customer support menu
③ Select [Picture Test] in [Additional Settings].
Select video test in additional settings
④ Perform [Picture Test] to check the screen condition.
Video test screen. [This image is a test screen. Please look carefully. Can you see the test screen well?] Message output example

[2019 or before] WebOS

Press the setting button on the TV remote and select [All Settings] → [Picture] → [Picture Test].
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 [Picture] and then ② [Picture Test].
Video test entry screen
③ Perform [Picture Test] to check the screen condition.
Video test screen. [This image is a test screen. Please look carefully. Can you see the test screen well?] Message output example
If the problem persists in the picture test, please contact LG Electronics Service Center.
Is color bleeding only found when the TV is connected to the set-top box?

➔ Open [Ultra Deep Color] in the TV Settings and check if it is set properly (On/Off).

When using a set-top box, an incorrect Ultra HD Deep Color setting can result in various symptoms, such as color bleeding and abnormal colors.

  • If your set-top box (including the HDMI connector) supports a picture quality of 4K (3840*2160), set it On.
  • If your set-top box supports the HD (1920*1080) or lower picture quality, set it Off.
Running [Ultra Deep Color] in Settings
Select [Settings] → [All Settings] → [Picture] → [Additional Settings] → [HDMI Ultra HD Deep Color] → [On] or [Off].
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 [Picture] and then ② [Additional Settings].
Additional setting menu entry screen in the video menu
③ Select [HDMI Ultra HD Deep Color] in [Additional Settings].
HDMI Ultra HD Deep Color setup entry screen in the additional setup menu
④ Set HDMI 1 (connected port) to On.
HDMI On setting example screen
Have you checked the HDMI cable?

➔ Try reconnecting the HDMI cable to the set-top box.

Reconnecting the HDMI cable to the set-top box
  • Turn off the power of the TV and set-top box, disconnect the HDMI cable on the back of the TV, and reconnect it.
  • It is recommended to use an authentic HDMI cable to connect your TV to a set-top box. (Version 2.0)
  • Make sure that you use an HDMI cable version 2.0 or later.
TV's HDMI cable reconnection screen

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

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