There are several reasons why the activity source cannot be switched. Please check the device and repair it according to the reason:
1. If the TV is powered on for a long time, the signal source switching command will not take effect before the power on is completed. The repair suggestion is consistent with your operation. Please add a long enough delay in startup settings (if 5s is not enough, try 10 seconds), and move the command to the front of the TV source switch command.
2. The input source of activity is disordered. We generally recommend that users enter a complete source list. If an input/source option is added every time an activity is created, the set activity may be affected, resulting in an input error.
You can check the startup settings of the two activities, check the source related commands, and confirm whether the input source is set to HDMI1 or HDMI2
3. LG TV's source configuration information is incorrect. Check device edit -- source confirmation. We are not sure whether LG's source options are directly controlled by separate commands, such as an HDMI1 command to directly switch the source to HDMI1?
1) If yes, please check whether there are HDMI1 and HDMI3 in the source list
2) If not, please ensure that all source switching methods, buttons, and souce list are consistent with your TV's actual situation. The manual list needs to be sorted and completed
4. Finally, please ensure that the source control command works. Please open the app and try the relevant commands of the source. If any command doesn't work, please repair it or give us feedback