LG 52LG50FD-SA (CHASSIS:LJ82B) Service Manual ▷ View online
- 37 -
C
2008
Flash
(32MB)
DDR1(128MB)
(16Mx16x4)
DDR1(128MB)
(16Mx16x4)
TEA6420
Audio
SW
MT
V416
(Micom)
NTP3000
(Digital AMP)
64Bit I/F
RGB-
P
C
HDM
I
1/2
/3
COMP 1
COMP 2
AV1
AV2
RGB-
P
C
I2S
MCLK
Digital out
COMP1
COMP2
AV1
AV2
B
C
M7412
(MPEG4
D
eco
de
r)
Analog
/Digital
Tuner
TC
9051
2
DVI
I2S
SIF
SPDIF Out
CVB
S
CVBS/Y/C
Y/Cb/Cr
R/G/B
DDR1
(64MB)
CS5340
L/
R
Se
ria
l TP
20b
its
12b
it YC
4
:2:2
NIM TUNER
TMDS_
RX+-
EPM240F
MNT out (Audio Only
)
T
M
D
S
341
A
(3x1
,S
/W
)
CVBS/Y/C
MC33078
(A
M
P
)
L/
R
R
S
232
RX/TX
DVI
4:
2:2 20bit YC
Full H
D
(1080
P)
WXGA(
7
6
8
P
)
RF
Sw
it
c
h
DM1/DP
1
Se
ria
l
TP
74HC
04
SPDIF Out
(Co
axi
al)
Video
Fro
nt
End
Du
al
HDMI
Rx
HD/SD
Video
Encoder
Aud
io
DSP
USB2.0
PKT
HSX
PCI/
EBI
HD-DVI
IB
0
Pa
rs
e2
RSBUF
XCBUF
RMX0
BCM3553
Local KEY
24
C16
74LV
C
14AP
W
X-tal(54M)
R
eset
K
IA7029
NVRAM
I2C
All Source Audio
- 38 -
C
2008
Make sure you can’t hear any audio
Check Signal
L504, L505
Replace it.
Check Signal
L508, L509, L510, L511
Y
N
Check IC501 Power 19V, 3.3V, 1.8V
L500, L501, L502, L503
Replace L
Y
N
Y
Replace it
N
Check Connector
P500
Y
Check BCM3553 I2S Output
R627, R628, R629
Y
Replace it.
N
Replace connector
N
Check speaker
Y
Replace speaker
N
Maybe NTP3000 has problems. Replace it
Y
All Source Audio
- 39 -
C
2008
Flash
(32MB)
DDR1(128MB)
(16Mx16x4)
DDR1(128MB)
(16Mx16x4)
TEA6420
Audio
SW
MT
V416
(Micom)
NTP3000
(Digital AMP)
64Bit I/F
RGB-
P
C
HDM
I
1/2
/3
COMP 1
COMP 2
AV1
AV2
RGB-
P
C
I2S
MCLK
Digital out
COMP1
COMP2
AV1
AV2
B
C
M
7412
(MPEG4
D
eco
de
r)
Analog
/Digital
Tuner
TC
9051
2
DVI
I2S
SIF
SPDIF Out
CVB
S
CVBS/Y/C
Y/Cb/Cr
R/G/B
DDR1
(64MB)
CS5340
L/
R
Se
ria
l TP
20b
its
12b
it YC
4
:2:2
NIM TUNER
TMDS_
RX+-
EPM240F
MNT out (Audio Only
)
T
M
D
S
341
A
(3x1
,S
/W
)
CVBS/Y/C
MC33078
(A
M
P
)
L/
R
R
S
232
RX/TX
DVI
4:
2:2 20bit YC
Full H
D
(1080
P)
WXGA(
7
6
8
P
)
RF
Sw
it
c
h
DM1/DP
1
Se
ria
l
TP
74HC
04
SPDIF Out
(Co
axi
al)
Video
Fro
nt
End
Du
al
HDMI
Rx
HD/SD
Video
Encoder
Aud
io
DSP
USB2.0
PKT
HSX
PCI/
EBI
HD-DVI
IB
0
Pa
rs
e2
RSBUF
XCBUF
RMX0
BCM3553
Local KEY
24
C16
74LV
C
14AP
W
X-tal(54M)
R
eset
K
IA7029
NVRAM
I2C
Digital TV Audio
- 40 -
C
2008
Check video output
Follow procedure All source audio trouble
shooting
Y
Follow procedure digital TV video
trouble shooting
N
N
Maybe BCM3553 internal audio DSP
has problems. Replace it
Digital TV Audio
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