Anomalies with broadcast signals or the TV may lead to noise.
A sound test is a good way to self-test the TV condition. If the test yields a sound of good quality, then it may indicate that the noise is likely due to signals, not the TV itself.
In this case, it is advisable to contact your broadcast service provider for a signal test. (e.g., cable TV, Skylife, IPTV)
Try this
Are you experiencing noise in all channels?
? Go to [Settings] and start [Sound Test].
Running [Sound Test] in the Settings menu
[2020] WebOS 5.0
Press the 
button on the TV remote and select [All Settings] → [Support] → [Additional Settings] → [Sound Test].
Turn on the TV and press the [Settings] button on your TV remote.
Select [All Settings] in the [Settings] menu.
Select [All Settings] in the [Settings] menu.
① Select [Support] and then ② [Additional Settings].
③ Select [Sound Test] in [Additional Settings].
④ Check the sound coming from the TV and respond when prompted.
[Prior to 2019] WebOS 4.5
Press the 
button on the TV remote and select [All Settings] → [Sound] → [Sound Test].
Turn on the TV and press the [Settings] button on your TV remote.
Select [All Settings] in the [Settings] menu.
Select [All Settings] in the [Settings] menu.
Select ② [Sound Test] in ① [Sound].
② Check the sound coming from the TV and respond when prompted.
※ Perform a sound test. If the noise persists in the test sound, please contact LG Electronics Service.
Electrical noise
A high-speed switching circuit that supplies a large amount of current to drive the product may generate subtle electrical noise, the extent of which varies depending on the product.
The noise has nothing to do with product performance or reliability.
We control product quality through rigorous testing during the entire production, and a certain level of noise or lower cannot be accepted as a condition for product exchange or refund.
The noise has nothing to do with product performance or reliability.
We control product quality through rigorous testing during the entire production, and a certain level of noise or lower cannot be accepted as a condition for product exchange or refund.
This guide was created for all models, so the images or content may be different from your product.
