DOWNLOAD LG 32LS3450 (CHASSIS:LA25C) Service Manual ↓ Size: 5.55 MB | Pages: 60 in PDF or view online for FREE

Model
32LS3450 (CHASSIS:LA25C)
Pages
60
Size
5.55 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
32ls3450-chassis-la25c.pdf
Date
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LG 32LS3450 (CHASSIS:LA25C) Service Manual ▷ View online

- 17 -
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
Check COMP_DET Signal
Replace R1614, R4223 or R1615
No
Check Mstar LVDS Output
Replace Mstar(IC101) or Main Board.
ok
No
- 18 -
6. RGB Video
Check input signal format.
Is it supported?
Check RGB Cable conductors
for damage or open conductor
Check EDID
I2C Signal
R138, R139(SDA,SCL)
Check JK1104
H/V_Sync/R/G/B Signal Line
ok
ok
ok
No
No
re-download EDID data ,Replace Mstar(IC101) or Main Board
ok
Replace Jack
Check DSUB_DET
Replace R1146 or R1147
No
Check Mstar LVDS Output
Replace Mstar(IC101) or Main Board.
ok
No
- 19 -
7. HDMI Video
Check input signal format.
Is it supported?
Check HDMI Cable conductors
for damage or open conductor.
Check EDID
R4033,R4034,R4035,R4036
,R4037,R4038 I2C Signal
Check JK801, JK802, JK803
ok
ok
ok
No
No
Replace the defective IC or re-download EDID data
Check HDCP 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
ok
No
Check Mstar LVDS Output
Replace Mstar(IC101) or Main Board.
ok
No
Replace Main Board
No
Check HDMI_DET(HPD)
No
ok
Replace R830,R828,R862
- 20 -
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)
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