LG 50PK750 Owner's Manual page 40

APPENDIX
_ Check High Speed HDMI cable.
s_Check USB cable over version 2.0.
_ Use normal MP3 file. _This feature is not available for all models.
Activate the Auto configure feature or adjust size, phase, or H/V position.
(Option)
_ Check the signal cable.
_ Reinstall the PC video card.
_ Check the manual for the video card in the PC to see if it supports
HDMI audio and how to set it up properly.
_>
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