LG GX 420W 3.1-Channel Soundbar System - Manual (Page 42)

Troubleshooting 42
Troubleshoo
ting
4
NOTES to release Demo mode
Symptoms Cause & Solution
Can not change input source with F such as BT
( Bluetooth ), HDMI etc. and only [DEMO] indication
is showing in the front display.
Unplug the power cord and plug it in again. If that
doesn’t work, after setting the volume to 2, press and
hold
F (About 5 seconds) on the main unit until the
display indicates current selected function.
Remote Control does not work. (No response)