DOWNLOAD LG 32LV3500-UA / 32LV3520-UC (CHASSIS:LA01U) Service Manual ↓ Size: 9.89 MB | Pages: 54 in PDF or view online for FREE

Model
32LV3500-UA 32LV3520-UC (CHASSIS:LA01U)
Pages
54
Size
9.89 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
32lv3500-ua-32lv3520-uc-chassis-la01u.pdf
Date
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LG 32LV3500-UA / 32LV3520-UC (CHASSIS:LA01U) Service Manual ▷ View online

8. All Source Audio
Check the TV Speaker Menu
(Menu -> Sound -> TV Speaker)
On
ok
ok
Check Output Signal P501
1, 2, 3, 4 pin.
Replace Audio AMP IC(IC501)
ok
No
Check Connector & P501
Replace connector
if found to be damaged.
ok
No
Check speaker resistance
and connector damage.
Replace speaker.
ok
No
Off
Toggle the Menu
Check AMP IC(IC501) Power
24V, 3.3V, 1.8V.
No
Check Regulator IC404
Check Mstar I2S Output
R503, R504, R505
No
Check signal line. Or replace Mstar(IC101)
Check Mstar AUDIO_MASTER_CLK
TP502
No
Replace Mstar(IC101) or Main Board.
ok
Check AMP I2C Line
R506, R507
No
Check signal line. Or replace Mstar(IC101)
9. Digital TV Audio
Check RF Cable & Signal
Follow procedure 
‘8. All source audio’
trouble shooting guide.
ok
Check Tuner 3.3V Power
L3703
Replace L3703
Check Tuner 1.2V Power 
IC3703  2 pin : 1.2V
Check IF_P/N Signal
TU3702  17/18 Pin
Replace IC3703 
Check Tuner 5V Power
L3702
Check IC406,IC410
ok
ok
ok
ok
No
No
No
No
Replace IC406,IC410
No
Bad Tuner. Replace Tuner.
Replace L3702
ok
10. Analog TV Audio
Check RF Cable & Signal
Follow procedure 
‘8. All source audio’
trouble shooting guide.
ok
Check Tuner 3.3V Power
L3703
Replace L3703
Check Tuner 1.2V Power 
IC3703 2 pin : 1.2V
Check CVBS Signal
TU3702 11 Pin
Replace IC3703 .
Check Tuner 5V Power
L3702
Check IC406,IC410
ok
ok
ok
ok
No
No
No
No
Replace IC406,IC410
No
Bad Tuner. Replace Tuner.
Replace L3702
ok
12. Component Audio
Check Component Cable
for damage or open conductor.
Check JK1601, JK1603 
& Signal Line
ok
ok
No
Replace Jack
11. AV Audio
Check AV Cable for damage
for damage or open conductor
Check JK1604 , JK9001
& Signal Line
ok
ok
No
Replace Jack
Follow procedure 
‘8. All source audio’
trouble shooting guide.
Follow procedure 
‘8. All source audio’
trouble shooting guide.
13. RGB Audio
Check Cable conductors
for damage or open conductor
Check JK1104 & Signal Line
ok
No
ok
Replace Jack
Follow procedure 
‘8. All source audio’
trouble shooting guide.
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