Date; Revised Date - LG 37LV370S Service Manual

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.
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Only for training and service purposes
C. Audio error_ No audio/Normal video
Voltage and speaker checking method
when there is no audio
Established

date

Revised
date
②
2008. 2 . 1 Electronics 6-3
22/33 - 8/13
③
LGE Internal Use Onl