Read LG 47LH30 (CHASSIS:LA92A) Service Manual online
- 22 -
LG Electronics. Inc. All right reserved.
C
2009
9. Digital TV Audio
Check Tuner 5V Power
TU1001 4Pin
NO
Check IC1002
Check IC1005(19",22")
OK
Check IF_P/N Signal
NO
Bad Tuner. Replace Tuner.
NO
Bad Tuner. Replace
Tuner.
OK
Check Check Demodulator Input
Clock(X1005)
NO
Replace X1005
OK
Check IC400(LGDT) Output
- AR1070, AR1071
NO
Replace IC400
OK
Check Output Signal
P600 1,2,3,4 PIN
NO
Replace NTP(Audio AMP)
IC500
OK
Check Connector & P600
NO
Replace connector
if found to be damaged.
OK
Check speaker resistance
and connector damage.
NO
Replace speaker.
10. Analog TV Audio
Check RF Cable
OK
Check Tuner 5V Power
TU1001 4Pin
NO
Check IC1002
Check IC1005(19",22")
NO
Bad Tuner. Replace
Tuner.
OK
Check SIF buffer signal.
NO
Check SIF Signal line.
OK
Follow procedure All source
audio trouble shooting guide
audio trouble shooting guide
NO
Replace Mstar(IC100)
or Main board
Click on the first or last page to see other 47LH30 (CHASSIS:LA92A) service manuals if exist.