DOWNLOAD LG 32LD550 (CHASSIS:LA02B) Service Manual ↓ Size: 4.9 MB | Pages: 58 in PDF or view online for FREE

Model
32LD550 (CHASSIS:LA02B)
Pages
58
Size
4.9 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
32ld550-chassis-la02b.pdf
Date
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LG 32LD550 (CHASSIS:LA02B) Service Manual ▷ View online

3. Analog TV Video
Check RF Cable & Signal
Check Tuner 3.3V Power
L701
Replace L701
Check Tuner 1.2V Power 
IC700   2 pin : 1.2V
Check CVBS Signal
TU700  11 Pin
Replace IC700.
Check Tuner 5V Power
L700
Check IC8003
ok
ok
ok
ok
ok
No
No
No
No
No
Replace IC8003
No
Bad Tuner. Replace Tuner.
Replace  L8007
ok
Check FRC and BCM LVDS Output
Replace Mstar(IC9001) or BCM( IC900)
or Main Board.
4. AV Video
Check input signal format.
Is it supported?
Check AV Cable for damage
for damage or open conductor
Check JK100 , JK8500
CVBS Signal Line
R105 , R8503
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 JK100
Y/PB/PR signal Line
ok
ok
ok
No
Replace Jack
ok
Check CVBS_DET Signal
Replace R113 or R8504
No
Check COMP_DET Signal
Replace R119 or R129
No
ok
No
Check FRC and BCM LVDS Output
Replace Mstar(IC9001) or BCM( IC900)
or Main Board.
No
Check FRC and BCM LVDS Output
Replace Mstar(IC9001) or BCM( IC900)
or Main Board.
6. RGB Video
Check input signal format.
Is it supported?
Check RGB Cable conductors
for damage or open conductor
Check EDID & EEPROM
IC8401  I2C Signal R8415, 
R8416, R8417,R8421(SDA,SCL)
Check P8400
H/V_Sync/R/G/B Signal Line
R8408, R8409, R8410
ok
ok
ok
No
No
Re-download EDID data or Replace the defective IC 
ok
Replace Jack
Check DSUB_DET
Replace R8425
No
ok
No
Check FRC and BCM LVDS Output
Replace Mstar(IC9001) or BCM( IC900)
or Main Board.
7. HDMI Video
Check input signal format.
Is it supported?
Check HDMI Cable conductors
for damage or open conductor.
Check HDMI Switch 
IC8300 video Signal and I2C line
Check JK8300 / 1 / 2 / 3
ok
ok
ok
No
No
Replace Coil or FET
ok
Replace Jack
Check HDMI Signal output
of  HDMI Switch (IC8300)
Check resister R8329 ~ R8334
If no problem, check signal line
No
Replace BCM( IC900) or Main Board
No
Check HDMI_DET(HPD)
No
ok
Replace R8300.R8302, R8301,R8316
Check L8300(+3.3V) , Q200 (+1.8V) 
Replace the defective IC.
No
OK
ok
No
Check FRC and BCM LVDS Output
Replace Mstar(IC9001) or BCM( IC900)
or Main Board.
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