DOWNLOAD LG 42LH40ED / 42LH45ED (CHASSIS:LJ92J) Service Manual ↓ Size: 5.93 MB | Pages: 76 in PDF or view online for FREE

Model
42LH40ED 42LH45ED (CHASSIS:LJ92J)
Pages
76
Size
5.93 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
42lh40ed-42lh45ed-chassis-lj92j.pdf
Date
PREV: LG 42LH40 (CHASSIS:LA92G) Service Manual

LG 42LH40ED / 42LH45ED (CHASSIS:LJ92J) Service Manual ▷ View online

6. RGB Video Trouble Shooting
Check Signal Format
Is it supported signal?
Y
Check RGB Jack JK701
N
Y
Y
Check RGB Cable
Replace Jack
Check RGB Signal
L706, L707, L708
N
Replace It & Recheck
Y
Check Sync Signal
IC1701 #11, #3
N
Replace one of R747/R751/IC701
& Recheck
Y
Check EEPROM (IC700)
N
Replace it or re-burn
& Recheck
Y
Maybe BCM3556(IC100)
has problems
7. AV Video Trouble Shooting
MPEG_TS
DDR2
256MB
DDR2
256MB
BCM3556
(400M MIPS)
BCM3556
(400M MIPS)
1080P
LVDS
(Front-end)
(External Input)
EXT_IN
HDMI0_BCM
CVBS_LIVE
TP1
CVBS1/
SIF1
Cab
le
ISDB-T/
PAL/NTSC
(System + DVR + Scalar)
(Analog DVR)
CVBS2/
SIF2
ISDB-T/
PAL/NTSC
Serial
TP1
Serial
TP2
I2S_BCM
NTP3100L
NTP3100L
CVBS1
CVBS2
CVBS_LIVE
CVBS/Y_DVR
COMP1_LR
COMP2_LR
RGB_LR
2069_L/R_OUT1
CXA2069
CXA2069
2069_L/R_OUT2
EXT_IN
HDMI0_BCM
AV1
AV2
NANDFlash
128MB
NANDFlash
128MB
(Etc)
SW
SW
SIF2
SIF1
SPI BUS
USB2.0
SPDIF
SIF_DVR
SIF_LIVE
SIF_LIVE
2069_L/R_OUT1
TP2
I2S_BCM
SPIF225A
SPIF225A
HDD
HDD
CVBS/Y_DVR
SIF_DVR
2069_L/R_OUT2
SAA7164
SAA7164
MPEG_TS
DDR1
256Mb
DDR1
256Mb
Flash
256KB
Flash
256KB
CPLD
CPLD
Parallel TS
Serial
I2C
MSPI
TDA9996
TDA9996
(Comp1/2, RGB)
TU_CVBS_DVR
TU_CVBS_DVR
HDMI4
HDMI2
HDMI1
SIDE HDMI_PORT4
UI_HW_PORT1
UI_HW_PORT2
RMX
BCM_SPI_CSb/
BCM_SPI_MISO
TP REMUX PORT
BCM_SPI_MOSI/
BCM_SPI_SCK
MNT_VOUT_DVR
MNT_VOUT_DVR
MONITOR_LR+/-_OUT
AMP
AMP
MNT_LOUT
MNT_ROUT
MNT_L/ROUT
Not Stuffed
7. AV Video Trouble Shooting
Y
Check Jack JK700/JK704
N
Y
Check CVBS Signal
CXA2069(IC1102) #1 Pin
CXA2069(IC1102) #22 Pin
N
Y
Check CVBS Signal
CXA2069(IC1102) #53 Pin
N
Replace IC1102 & Recheck
Y
Check CVBS Signal
C137
N
Replace one of 
R1190/Q1110/R195/C137
& Recheck
Y
Y
Replace Jack
Maybe BCM3556(IC100)
has problems
Check Signal Format
Is it supported signal?
Check AV Cable
Replace one of
R721/R1142/C1134
R760/R1161/C1149
& Recheck
Checl IC1102 Power Level 9V
at L1110
N
Replace It
Y
8. HDMI Video Trouble Shooting
MPEG_TS
DDR2
256MB
DDR2
256MB
BCM3556
(400M MIPS)
BCM3556
(400M MIPS)
1080P
LVDS
(Front-end)
(External Input)
EXT_IN
HDMI0_BCM
CVBS_LIVE
TP1
CVBS1/
SIF1
Ca
ble
ISDB-T/
PAL/NTSC
(System + DVR + Scalar)
(Analog DVR)
CVBS2/
SIF2
ISDB-T/
PAL/NTSC
Serial
TP1
Serial
TP2
I2S_BCM
NTP3100L
NTP3100L
CVBS1
CVBS2
CVBS_LIVE
CVBS/Y_DVR
COMP1_LR
COMP2_LR
RGB_LR
2069_L/R_OUT1
CXA2069
CXA2069
2069_L/R_OUT2
EXT_IN
HDMI0_BCM
AV1
AV2
NANDFlash
128MB
NANDFlash
128MB
(Etc)
SW
SW
SIF2
SIF1
SPI BUS
USB2.0
SPDIF
SIF_DVR
SIF_LIVE
SIF_LIVE
2069_L/R_OUT1
TP2
I2S_BCM
SPIF225A
SPIF225A
HDD
HDD
CVBS/Y_DVR
SIF_DVR
2069_L/R_OUT2
SAA7164
SAA7164
MPEG_TS
DDR1
256Mb
DDR1
256Mb
Flash
256KB
Flash
256KB
CPLD
CPLD
Parallel TS
Serial
I2C
MSPI
TDA9996
TDA9996
(Comp1/2, RGB)
TU_CVBS_DVR
TU_CVBS_DVR
HDMI4
HDMI2
HDMI1
SIDE HDMI_PORT4
UI_HW_PORT1
UI_HW_PORT2
RMX
BCM_SPI_CSb/
BCM_SPI_MISO
TP REMUX PORT
BCM_SPI_MOSI/
BCM_SPI_SCK
MNT_VOUT_DVR
MNT_VOUT_DVR
MONITOR_LR+/-_OUT
AMP
AMP
MNT_LOUT
MNT_ROUT
MNT_L/ROUT
Not Stuffed
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