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

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<div class="content-service-view">
        <p class="info-desc">
            HDMI cables have a CEC function, enabling power control between products.<br>
            <strong>e.g.)</strong> 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.
        </p>        
<div class="tip-box">
            <strong class="tip-tit">How to set the SIMPLINK(HDMI-CEC) from the Settings menu by year</strong>
            <p>
                
<span><strong>[2021 WebOS6.0]</strong></span>
                
<span style="color: rgb(0, 0, 0) !important;">
                    Press the <img style="vertical-align: bottom;" alt="settings icon" src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=imU39q04n9LgAWxv6mPw&amp;portalId=P1"> button on the remote control and select [All Settings] → [General] → [Devices] → [HDMI Settings] → [SIMPLINK (HDMI-CEC)] → [ON]
                </span>
            </p>            <p>
                
<span><strong>[2019 WebOS4.5]</strong></span>
                
<span style="color: rgb(0, 0, 0) !important;">
                    Press <img style="vertical-align: bottom;" alt="settings icon" src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=vt8dcTR9iWOJhBGOcZ1sWQ&amp;portalId=P1"> on the remote control and select [All Settings] → [Connection] → [HDMI Device Connection Settings] → [SIMPLINK(HDMI-CEC)] → [ON].
                </span>
            </p>            <p>
                
<span><strong>[2018 WebOS4.0] before</strong></span>
                
<span style="color: rgb(0, 0, 0) !important;">
                    Press the <img style="vertical-align: bottom;" alt="settings icon" src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=sxX0bWjJgYBufS3HuwBFA&amp;portalId=P1"> button on the remote control → [All Settings] → [General] → [SIMPLINK (HDMI-CEC)] → [Auto Power Sync] →[ON]
                </span>
            </p>        </div>
        
<h2 class="tit">Try this</h2>
        
<h3 class="sub-tit">Setting the [Auto Power] function from the Settings menu</h3>
        <p class="info-desc idt">➔ [Auto Power] function setting in [2022 WebOS22]</p>        
<div class="con-view">
            Press the <img style="vertical-align: bottom;" alt="settings icon" src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=hwGZ4Uyh6W8UshiWekBuQ&amp;portalId=P1"> button on the remote control → [All Settings] → [General] → [Devices] → [HDMI Settings] → [SIMPLINK (HDMI-CEC)] → [ON]
        </div><br>
        <p class="txt-idt">
            1. Turn on the TV and press the [Settings] button on the remote control.<br>
            From [Settings], select [All Settings].
        </p>        
<div class="img-only">
            <img alt="Image that enters all settings by pressing the setting button on the remote control " src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=FtgLgjJalKV81kuufKo9XA&amp;portalId=P1">
        </div>
        <p class="txt-idt">
            2. From [General], select [Devices].
        </p>        
<div class="img-only">
            <img alt="Image of selecting Devices from the general menu" src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=rwkrddx4ULWsgyJhHZ5mCA&amp;portalId=P1">
        </div>
        <p class="txt-idt">
            3. Select [HDMI Settings].
        </p>        
<div class="img-only">
            <img alt="Image of selecting HDMI settings" src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=m3eI2nURD3zYSqpeeL6mbg&amp;portalId=P1">
        </div>
        <p class="txt-idt">
            4. Set the [SIMPLINK (HDMI-CEC)] to ON.
        </p>        <p>※ 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.</p>        
<div class="img-only">
            <img alt="Image of selecting Simplink as On" src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=NGk5BXeOo3iwrR5dSBg&amp;portalId=P1">
        </div><br>
        <p class="info-desc idt">➔ Setting the [SIMPLINK(HDMI-CEC)] function in [2020 webOS5.0]</p>        
<div class="con-view">
            Press the <img style="vertical-align: bottom;" alt="settings icon" src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=bNBMgg5MigZYA4IyH6ujsA&amp;portalId=P1"> button on the remote control and select [All Settings] → [Connection] → [Device Connection Settings] → [SIMPLINK(HDMI-CEC)] → [ON].
        </div><br>
        <p class="txt-idt">
            1. Turn on the TV and press the [Settings] button on the remote control.<br>
            From [Settings], select [All Settings].
        </p>        
<div class="img-only">
            <img alt="Image that enters all settings by pressing the setting button on the remote control" src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=o0JtDrT7YhHmh12kVG0Bw&amp;portalId=P1">
        </div>
        <p class="txt-idt">
            2. From [Connection], select [Device Connection Settings].
        </p>        
<div class="img-only">
            <img alt="Image of selecting Device Connection Settings in the connection menu" src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=LfIQXCdZNXXf9suHovAoA&amp;portalId=P1">
        </div>
        <p class="txt-idt">
            3. From [Device Connection Settings], change the setting of [SIMPLINK(HDMI-CEC)] to ON.
        </p>        
<div class="img-only">
            <img alt="Image of selecting SimpLink in Device Connection Settings" src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=EzhiXxhWvmUJWjfAPpwg&amp;portalId=P1">
        </div>
        
<div class="tip-box">
            <strong class="tip-tit">Note</strong>
            
<div class="con-view">
                ※ Change the power sync and auto power standby mode to ON in the set-top box.<br>
                If you do not know how to set it up, please contact your set-top box operator(carrier).
            </div>
        </div>
        <p class="help-txt">This guide was created for all models, so the images or content may be different from your product.</p>    </div>

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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

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