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[LG OLED TV] I want to turn on/off the external device that is connected to the TV with a HDMI cable simultaneously

Troubleshooting

HDMI cables have a CEC function, enabling power control between products.
e.g.) When you turn off or turn on the TV, the device connected to the TV with an HDMI cable is also turned off or turned on.

How to set the SIMPLINK(HDMI-CEC) from the Settings menu by year

[2021 WebOS6.0] Press the settings icon button on the remote control and select [All Settings] → [General] → [Devices] → [HDMI Settings] → [SIMPLINK (HDMI-CEC)] → [ON]

[2019 WebOS4.5] Press settings icon on the remote control and select [All Settings] → [Connection] → [HDMI Device Connection Settings] → [SIMPLINK(HDMI-CEC)] → [ON].

[2018 WebOS4.0] before Press the settings icon button on the remote control → [All Settings] → [General] → [SIMPLINK (HDMI-CEC)] → [Auto Power Sync] →[ON]

Try this

Setting the [Auto Power] function from the Settings menu

➔ [Auto Power] function setting in [2022 WebOS22]

Press the settings icon button on the remote control → [All Settings] → [General] → [Devices] → [HDMI Settings] → [SIMPLINK (HDMI-CEC)] → [ON]

1. Turn on the TV and press the [Settings] button on the remote control.
From [Settings], select [All Settings].

Image that enters all settings by pressing the setting button on the remote control

2. From [General], select [Devices].

Image of selecting Devices from the general menu

3. Select [HDMI Settings].

Image of selecting HDMI settings

4. Set the [SIMPLINK (HDMI-CEC)] to ON.

※ For WebOS6.0 and later versions, there is no separate SIMPLINK(HDMI-CEC), and if you set SIMPLINK (HDMI-CEC) to ON, it can control external devices.

Image of selecting Simplink as On

➔ Setting the [SIMPLINK(HDMI-CEC)] function in [2020 webOS5.0]

Press the settings icon button on the remote control and select [All Settings] → [Connection] → [Device Connection Settings] → [SIMPLINK(HDMI-CEC)] → [ON].

1. Turn on the TV and press the [Settings] button on the remote control.
From [Settings], select [All Settings].

Image that enters all settings by pressing the setting button on the remote control

2. From [Connection], select [Device Connection Settings].

Image of selecting Device Connection Settings in the connection menu

3. From [Device Connection Settings], change the setting of [SIMPLINK(HDMI-CEC)] to ON.

Image of selecting SimpLink in Device Connection Settings
Note
※ Change the power sync and auto power standby mode to ON in the set-top box.
If you do not know how to set it up, please contact your set-top box operator(carrier).

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

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