DOWNLOAD LG 26LV2500-UG (CHASSIS:LA01Y) Service Manual ↓ Size: 4.61 MB | Pages: 45 in PDF or view online for FREE

Model
26LV2500-UG (CHASSIS:LA01Y)
Pages
45
Size
4.61 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
26lv2500-ug-chassis-la01y.pdf
Date
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Trouble shooting guide
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
No
Replace Amp IC(IC501)
Check Mstar I2S Output
IC501 9,10,11 Pin
No
Check signal line. Or replace Mstar(IC101)
Check Mstar AUDIO_MASTER_CLK
R148
No
Replace Mstar(IC101) or Main Board.
ok
Check AMP I2C Line
R140, R141
No
Check signal line. Or replace Mstar(IC101)
Trouble shooting guide
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 1.8V Power 
IC3703  2 pin : 1.8V
Check IF_P/N Signal
TU3700  10/11 Pin
Replace IC3703 
ok
ok
ok
No
No
No
Bad Tuner. Replace Tuner.
Trouble shooting guide
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 1.8V Power 
IC3703 2 pin : 1.8V
Check CVBS Signal
TU3700 8 Pin
Replace IC3703 .
ok
ok
ok
No
No
No
Bad Tuner. Replace Tuner.
Trouble shooting guide
12. Component Audio
Check Component Cable
for damage or open conductor.
Check JK1603 
& Signal Line
ok
ok
No
Replace Jack
11. AV Audio
Check AV Cable for damage
for damage or open conductor
Check JK1604 & 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 JK1102 & Signal Line
ok
No
ok
Replace Jack
Follow procedure 
‘8. All source audio’
trouble shooting guide.
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