DOWNLOAD LG 42LX6500-UB (CHASSIS:LA02R) Service Manual ↓ Size: 7.65 MB | Pages: 105 in PDF or view online for FREE

Model
42LX6500-UB (CHASSIS:LA02R)
Pages
105
Size
7.65 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
42lx6500-ub-chassis-la02r.pdf
Date
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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
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.
5. Trouble shooting - No video (Component)
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.
6. Trouble shooting - No video (RGB-PC)
7. Trouble shooting - No video (HDMI)
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.
8. Trouble shooting - No video (FRC - M120Hz/TM240Hz)
Check  input LVDS_Tx/Rx signals
Check the Power 
(3.3V_MEMC/1.5V_MEMC/1.26V_MEMC )
Check 12Mz X-tal (X9000)
Is it ok?
Check HW option 
( Mirror or Non mirror / LVDS or Mini_LVDS
/GIP or Non_GIP / Scanning or Non Scanning) 
ok
ok
ok
No
No
ok
Correct HW option 
Æ
Check FRC output data
Is it ok? 
Replace the FRC
No
Check the serial Flash 
Is it ok?
No
ok
Replace the serial Flash
Check the BCM3949
No
Replace the LVDS wafer
No
No
Check the DC-DC Converter
Replace the X-TAL
ok
Check LVDS wafer
Is it ok ?  
ok
Check LVDS cable
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