DOWNLOAD LG 50PX950-UA / 50PX950-UF (CHASSIS:PU02B) Service Manual ↓ Size: 5.31 MB | Pages: 74 in PDF or view online for FREE

Model
50PX950-UA 50PX950-UF (CHASSIS:PU02B)
Pages
74
Size
5.31 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / Plasma
File
50px950-ua-50px950-uf-chassis-pu02b.pdf
Date
PREV: LG 50PX950-SA (CHASSIS:PB01B) Service Manual

LG 50PX950-UA / 50PX950-UF (CHASSIS:PU02B) Service Manual ▷ View online

Great Company  Great People
Analog TV Audio Trouble Shooting
Check video output
Follow procedure All source audio trouble 
shooting 
(on page 25)
Y
Follow procedure analog TV video 
trouble shooting
(on page 15)
N
Replace BCM3549XS (IC501)
Check TU1400 (pin3) for 5V
Replace IC404 or IC406
N
Y
Check SIF signal (TU1400 #9)
Replace Tuner
N
Y
Check SIF signal (R1439)
Check SIF line
N
Y
< SIF waveform – sample >
- Defend on the input signal.
Y
Great Company  Great People
Component / RGB / AV Audio Trouble Shooting
CVBS waveform
IF waveform
TAS5709
(Digital AMP)
Reset
I2S
BCM3549XS
MCLK
HDMI CEC
IR
CVBS
Buffer
SIF
Buffer
RS-232C
I2C
CVBS(ATV)
NTSC/ATSC
TUNER
X-tal
(54MHz)
NAND Flash
(2GB)
DDR2 (512MB)
TDVJ-H001F
KIA7427AF
KIA7427AF
24C16
24C16
Local
Local
KEY
KEY
MAIN IF
DP/DM
DP/DM
NEC
NEC
Micom
Micom
COMP1
COMP2
Y/Cb/Cr
Y/Cb/Cr
R/G/B 
RGB-PC
Rear AV
CVBS
Side AV
CVBS
AV1,2 L/R
COMP 1,2 L/R
L/R
L/R
RGB-PC 
Audio In
Rear HDMI 1/2/3
Side HDMI 1
SIF
Audio
Front 
End
Video 
Front 
End
TMDS/DDC
HDMI 
RX
HD/SD
Video
Encoder
Audio
DSP
SPDIF Out
UART
RX/TX
UART
UART
USB 2.0
RMII
RMII
24C01
DDC
SIF
TDA19997
TDA19997
HDMI SW
LAN
LAN
Digital out
Full HD(1080P)
IR Emitter
3D_
S
YNC
Great Company  Great People
Component / RGB / AV Audio Trouble Shooting
Check Connector and cables
JK100 (Component, AV Rear)
P100 (RGB)
JK101 (AV Side)
Replace connector or cable if 
found damaged
N
Y
Check signal
R126 / R127 (Component1)
R117 / R118 (Component2)
R149 / R150 (RGB)
R109 / R110 (AV Rear)
R111 / R112 (AV Side)
Replace the Resistor
N
Y
Follow procedure All source audio 
trouble shooting 
(on page 25)
Great Company  Great People
HDMI Audio Trouble Shooting
CVBS waveform
IF waveform
TAS5709
(Digital AMP)
Reset
I2S
BCM3549XS
MCLK
HDMI CEC
IR
CVBS
Buffer
SIF
Buffer
RS-232C
I2C
CVBS(ATV)
NTSC/ATSC
TUNER
X-tal
(54MHz)
NAND Flash
(2GB)
DDR2 (512MB)
TDVJ-H001F
KIA7427AF
KIA7427AF
24C16
24C16
Local
Local
KEY
KEY
MAIN IF
DP/DM
DP/DM
NEC
NEC
Micom
Micom
COMP1
COMP2
Y/Cb/Cr
Y/Cb/Cr
R/G/B 
RGB-PC
Rear AV
CVBS
Side AV
CVBS
AV1,2 L/R
COMP 1,2 L/R
L/R
L/R
RGB-PC 
Audio In
Rear HDMI 1/2/3
Side HDMI 1
SIF
Audio
Front 
End
Video 
Front 
End
TMDS/DDC
HDMI 
RX
HD/SD
Video
Encoder
Audio
DSP
SPDIF Out
UART
RX/TX
UART
UART
USB 2.0
RMII
RMII
24C01
DDC
SIF
TDA19997
TDA19997
HDMI SW
LAN
LAN
Digital out
Full HD(1080P)
IR Emitter
3D_
S
YNC
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