LG S65S3-C Service Manual

2-51
ELECTRICAL TROUBLESHOOTING GUIDE
5. NO AUDIO OUTPUT
No AUDIO output
IC601
PWM_3V3 OK?
Check IC156 pin3 supply 5.5 VA and pin2.
YES
YES
YES
YES
NO
X602
24.576 MHz OK?
IC700, IC701, IC702
36 V, 12 V OK?
IC601 pin19, 20, 21, 22, 23
I2C data OK?
IC700, IC701, IC702
pin4, 16, 18 OK?
Replace X602.
Check SMPS 36 V and IC150 12 V.
Check IC501 B10/ D7/ C7/ D8/ C8 pin.
Check IC101.
Replace IC700, IC701, IC702.
YES
YES
NO
NO
NO
NO

LG S65S3-C Specifications

General

Brand	LG
Model	S65S3-C
Category	Home Theater System
Language	English