LG 26LV2500-SA (CHASSIS:LJ01T) Service Manual ▷ View online
2. Digital TV Video
Check RF Cable & Signal
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
Check Mstar LVDS Output
Replace Mstar(IC101) or Main Board.
ok
ok
ok
ok
ok
No
No
No
No
No
Replace IC406,IC410
No
Bad Tuner. Replace Tuner.
Replace L3702
ok
3. Analog TV Video
Check RF Cable & Signal
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
Check Mstar LVDS Output
Replace Mstar(IC101) or Main Board.
ok
ok
ok
ok
ok
No
No
No
No
No
Replace IC406,IC410
No
Bad Tuner. Replace Tuner.
Replace L3702
ok
4. AV Video
Check input signal format.
Is it supported?
Check AV Cable for damage
for damage or open conductor
Check JK1604 , JK9901
CVBS Signal Line
R246 , R4016
ok
ok
ok
No
Replace Jack
5. Component Video
Check input signal format.
Is it supported?
Check Component Cable
for damage or open conductor.
Check JK1601 or 1603
Y/PB/PR signal Line
ok
ok
ok
No
Replace Jack
ok
Check CVBS_DET Signal
Replace R9915 or R1666
No
Check Mstar LVDS Output
Replace Mstar(IC100) or Main Board.
No
Check COMP_DET Signal
Replace R1614, R4223 or R1615
No
Check Mstar LVDS Output
Replace Mstar(IC100) or Main Board.
ok
No
6. RGB Video
Check input signal format.
Is it supported?
Check RGB Cable conductors
for damage or open conductor
Check EDID & EEPROM
IC1105 I2C Signal
R1141, R1143(SDA,SCL)
Check JK1104
H/V_Sync/R/G/B Signal Line
ok
ok
ok
No
No
Replace the defective IC or re-download EDID data
ok
Replace Jack
Check DSUB_DET
Replace R1146 or R1147
No
Check Mstar LVDS Output
Replace Mstar(IC100) or Main Board.
ok
No
Click on the first or last page to see other 26LV2500-SA (CHASSIS:LJ01T) service manuals if exist.