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LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
No
Check the RF cable and RF signal Menu toggle
Check the Tuner 3.3V L3704
No
Yes
Exchange the L3704
No
Yes
Check the SIF signal R3704 Exchange the Tuner
Check the Speaker resistor or connector
No
Yes
Exchange the speaker
Check the cable is defective
No
Yes
Check the signal of JK1702
R1714, R1715
Exchange the Jack
Implement the “8. Audio of all input”
Of Malfunction guide
Yes
8. TV Audio
9. Component/RGB Audio
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