LG 37LBSD Owner's Manual page 90

mm_ Press the VOL or VOLUME button.
mini Sound muted? Press MUTE button.
mini Try another channel. The problem may be with the broadcast.
mmff Are the audio cables installed properly?
mini Adjust Balance in menu option.
mmff A change in ambient humidity or temperature may result in an unusual noise
when the product is turned on or off and does not indicate a fault with the
product.
mini Adjust resolution, horizontal frequency, or vertical frequency.
mini Check the input source.
,ruff Work the Auto con figu re or adjus t c,o ck, phas e, or H/V p o sit ion. (Option)
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