[LG TV] TV Keeps Turning Off When Connected to Set-Top Box — LG Help

HDMI cables support CEC capability, enabling power control between products.. The power may turn on or off automatically due to a malfunction of the CEC function.. Causes and Symptoms. Try this. Does your TV turn on or off by itself?. ➔ Go to the Settings menu and disable the [Au.

Stop if the product shows signs of electrical damage, burning, leaking near electrical components, or if the recommended checks do not resolve the issue. Use LG USA support for model-specific service guidance.

Not always. Controls, error codes and service steps can differ by model. Confirm the exact model number and follow the linked LG USA article for model-specific instructions.