No Audio - General - LG 47LB1DA 1080p LCD Training Manual

NO AUDIO - GENERAL

ANALOG OUT
Check LGDT1102F (IC402) I2S outputs
R434(LRCK), R435(SCK), R441(LRCH)
Check connector P1611
#10(SCK), #12(LRCK), #LRCH(LRCH)
Check MSP4450K (IC202) power pins
#12/13/65/66(5V), #39(8V)
Check MSP4450K(IC202) inputs
#19(SCK), #20(LRCK), #22(LRCH)
Check MSP4450K(IC202) outputs
#4(SCK), #5(LRCK), #6(LRCH), #74(MCLK)
Check NSP2100A (IC401)
PWM output: R804, R805(LEFT), R802, R803(RIGHT)
PWM mask: R1211(3.3V)
Check TAS5122 (IC403) outputs
IC402: #34/35/38/39(LEFT), #46/47/50/51(RIGHT)
Check speaker output wafer
P403(RIGHT), P404(LEFT)
Check Speaker
Directview LCD Training
TROUBLESHOOTING
DIGITAL OUT
Check LGDT1102F (IC402) SPDIF outputs
R436(IEC958_OUT)
Check EPM570T144 (IC301)
Check SPDIF out (R1035)
MONITOR OUT
Check MSP4450K (IC202) outputs
#33(MNT_R_OUT), #34(MNT_L_OUT)
Check MNT_OUT jack (J101)
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Troubleshooting