Read LG 55LV3730 (CHASSIS:LB12B) Service Manual online
Checking order when there is no audio
①
②
③
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)
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.
touch the GND and output terminal, the speaker is normal.
Established
date
date
Standard Repair Process Detail Technical Manual
Revised
date
date
LCD TV
Error
symptom
symptom
Voltage and speaker checking method in case of audio error
Content
C. Audio error_
Wrecked audio/discontinuation/noise
C-2-1
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