To use IPTV or other set-top box services on your LG TV, connect the set-top box to the TV with an HDMI cable and then switch the TV input to the matching HDMI port.
Most set-top box connection issues are caused by an incorrect HDMI connection, selecting the wrong TV input, or a feature setting (such as HDMI-CEC) not matching your intended use.
If the HDMI cable is loose or connected to a different HDMI port than expected, the TV may show “No Signal” or display a different device.
If the TV is set to a different input (for example, HDMI 1 instead of HDMI 2), the set-top box screen will not appear.
If the HDMI input was renamed during initial setup, the input may appear as “Set-Top Box” (or another custom name) instead of “HDMI 1/HDMI 2,” which can make it harder to identify the correct port.
1) Turn off the TV and the set-top box.
2) Connect one end of the HDMI cable to the HDMI OUT port on the set-top box.
3) Connect the other end to an HDMI IN port on the LG TV.
4) Turn on the TV and the set-top box.
5) Note the HDMI port number you used (for example, HDMI 1 or HDMI 2).
1) On the LG TV remote, press the Input button (Selects an input source).
2) Choose the HDMI input that matches the port you used.
3) If the input was renamed previously, it may appear as “Set-Top Box” instead of the HDMI port number—select that input if it matches your connection.
Setting: Settings > General > External Devices > HDMI Settings > SIMPLINK (HDMI-CEC) > On
Turn SIMPLINK (HDMI-CEC) on if you want compatible HDMI devices (including some set-top boxes) to be controlled through the LG TV remote and to support automatic input switching.
If the set-top box does not respond after enabling SIMPLINK, confirm that the set-top box supports HDMI-CEC and check its HDMI-CEC setting in the set-top box menu.
If the steps above did not resolve your issue, please visit the LG Electronics Support website. You can chat with our virtual assistant or schedule a service repair for further assistance.
※ Please note that service fees may apply for engineer visits if your product is out of warranty.
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