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LG TV - Why Does My TV Turn On By Itself

  • Troubleshooting
  • TV & Home Theater Accessories, TVs
  • 10/11/2023

At a Glance

If your LG TV is turning on automatically with no visible issues, this can be caused by timer settings on the TV or by a connected external device.

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Check that the TV's [Power On Timer] option is turned Off.

This option sets the TV to power on/off at the specific time set. If ON, select the option and toggle to OFF.

Timers menu with power on timer set to off

How to Set Power On/Off Timer in Settings

  • [2022 WebOS22] Press the settings button on remote button on the TV remote and select [All Settings] → [General] → [System] → [Time & Timer] → [Timers].
  • [2021 WebOS6.0] Press the settings button on remote button on the TV remote and select [All Settings] → [General] → [System] → [Time & Timer] → [Timers].
  • [2020 WebOS5.0] Press the settings button on remote button on the TV remote and select [All Settings] → [General] → [System] → [Time] → [Timers].
  • [2019 WebOS4.5 and Below] Press the settings button on remote button on the TV remote and select [All Settings] → [General] → [Timers].
  • [Netcast] Press the settings button on remote button on the TV remote and select [Settings] → [Time] → [Power On Time]/[Power Off Time].

Check the HDMI-CEC (Simplink) function in the TV.

Many HDMI devices have a CEC (Simplink) function, enabling power control between products. When active, the TV will power on when a connected HDMI device is activated, or is in standby mode for automatic updating.

Note

This feature will also need to be disabled in the connected HDMI device.

HDMI settings menu with Simplink toggled on

How to set HDMI-CEC (Simplink) in Settings

  • [2022 WebOS22] Press the settings button on remote button on the TV remote and select [All Settings] → [General] → [Devices] → [HDMI Settings] → [Simplink (HDMI-CEC)] → [On/Off].
  • [2021 WebOS6.0] Press the settings button on remote button on the TV remote and select [All Settings] → [General] → [Devices] → [HDMI Settings] → [Simplink (HDMI-CEC)] → [On/Off].
  • [2020 WebOS5.0] Press the settings button on remote button on the TV remote and select [All Settings] → [Connection] → [Device Connection Settings] → [Simplink (HDMI-CEC)] → [On/Off].
  • [2019 WebOS4.5] Press the settings button on remote button on the TV remote and select [All Settings] → [Connection] → [HDMI Device Settings] → [Simplink (HDMI-CEC)] → [On/Off].
  • [2019 WebOS4.0] or earlier Press the settings button on remote button on the TV remote and select [All Settings] → [General] → [Simplink (HDMI-CEC)] → [On/Off].

Check the TV is up-to-date

If it is not a setting issue, the TV may not be on the latest firmware and needs to be updated to remove any bugs.

Software update menu with check for updates selected

How to Update the Software Manually

  • [2020 WebOS5.0 or later] Press the settings button on remote button on the TV remote and select [All Settings] → [Support] → [Software Update] → [Check for Updates].
  • [2019 WebOS4.5] Press the settings button on remote button on the TV remote and select [All Settings] → [General] → [About This TV] → [Check for Updates].

Power cycle your TV

1Turn off the TV and unplug it.

2Press and hold the power button on the TV for 30 seconds.

Note

Power button location will vary depending on your TV.

Power button location under center of TV

3Keep the TV switched off for 5 minutes.

4Replug in the TV and switch it on.

If the problem continues, service will be required. Please visit our Request a Repair page for further assistance.

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