LG 37LV370S Service Manual page 73

Standard Repair Process Detail Technical Manual
Error
symptom
LCD TV
Content
①
Checking order when there is no audio
① Check the contact condition of 24V connector of Main Board
② Measure the 24V input voltage supplied from Power Board (If there is no input voltage, remove and check the
connector)
③ Connect the tester RX1 to the speaker terminal and if you hear the Chik Chik sound when you touch the
GND and output terminal, the speaker is normal.
Copyright © 2011 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
C. Audio error_
Wrecked audio/discontinuation/noise
Voltage and speaker checking method in case of audio error
Established
date
Revised
date
②
2008. 2 . 1 Electronics 6-3
25/33 - 9/13
③
LGE Internal Use Onl