LG 32LV2500-DG (CHASSIS:LT01M) Service Manual ▷ View online
6. RGB Video
Check input signal format.
Is it supported?
Check RGB Cable conductors
for damage or open connector
Check EDID & EEPROM
IC1105 I2C Signal
R1411, R1413(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
7. HDMI Video
Check input signal format.
Is it supported?
Check HDMI Cable
for damage or open connector.
Check EDID & EEPROM
IC801, IC802, IC804
I2C Signal
Check JK801, JK802, JK903
ok
ok
ok
No
No
Replace the defective IC or re-download EDID data
Check HDCP Key EEPROM(IC103)
Power & I2C Signal
Replace the defective IC.
ok
No
Replace Jack
Check HDMI Signal
Check other set
If no problem, check signal line
If no problem, check signal line
ok
No
Check Mstar LVDS Output
Replace Mstar(IC101) or Main Board.
ok
No
Replace Main Board
No
Check HPD
No
ok
Replace R895, R896, R897
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 Speaker cable
Replace connector
if found to be damaged.
if found to be damaged.
ok
No
Check speaker.
Replace speaker if found to be damaged.
ok
No
Off
Toggle the Menu
Check AMP IC(IC501) Power
24V(or 20V), 3.3V, 1.8V.
No
Check Regulator IC404(1.8V), IC405(3.3V), POWER B/D(24V)
Check Mstar I2S Output
R503, R504, R505
No
Check signal line. Or replace Mstar(IC101) or IC501
Check Mstar AUDIO_MASTER_CLK
R148
No
Replace Mstar(IC101) or Main Board.
ok
Check AMP I2C Line
R506, R507
No
Check signal line. Or replace Mstar(IC101) or IC501
9. Digital TV Audio
Check RF Cable & Signal
Check Tuner No 14 pin
(3.3V Power)
Check Tuner No 13 pin
(1.2V Power )
Check IF_P/N Signal
TU5001 17/18 Pin
Check Tuner No.3 pin
(5V Power)
Check IC406
Check Mstar LVDS Output
Replace Mstar(IC101) or Main Board.
ok
ok
ok
ok
ok
No
No
No
No
No
Replace IC406
No
Bad Tuner. Replace Tuner.
Replace Tuner
ok
Check IC405
Replace IC405
No
Replace Tuner
ok
Check IC3703
Replace IC3703
No
Replace Tuner
ok
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