LG UQ7570PUJ 50" 4K HDR Smart LED TV - Manual (Page 114)

Set Automatic Volume Adjustment to On .
General AI Service AI Sound / AI Sound Pro
Switch AI Sound or AI Sound Pro to Off .
The sound does not work or only the background music is played in some
programs.
(Programs produced for export by broadcasting companies)
Set your language preference in Audio Language .
Troubleshooting PC Connection Issues
Troubleshooting PC Connection Issues
Run Home Dashboard by pressing the button on the remote control. Select
Edit Inputs in the upper right corner. In the Edit mode, set the icon of the HDMI terminal
connected to the PC to PC to apply the video and aspect ratio settings that are aligned
with the PC.
If you experience any of the problems below while using the product, please check the
following. There may not be a problem with the product.
The screen remains blank after it is connected to a PC.
Check that the PC is properly connected to the TV.
Turn the TV off and back on using the remote control.
Restart the PC with the TV on.
Make sure that the output resolution set on the PC is set to the HDMI-PC supported
resolution of the TV.
To use dual monitors, check that the PC or notebook supports dual-monitor mode.
Reconnect the high speed HDMI cable.
If you have connected the RGB output port of your PC to the HDMI IN of your TV, you
need an RGB to HDMI gender.
You will not see anything on the screen if you use an HDMI to RGB gender.
The screen is not fully shown or is lopsided when connected to a PC.
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