DOWNLOAD LG 50PT250B-SG (CHASSIS:PB12K) Service Manual ↓ Size: 7.31 MB | Pages: 63 in PDF or view online for FREE

Model
50PT250B-SG (CHASSIS:PB12K)
Pages
63
Size
7.31 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / Plasma
File
50pt250b-sg-chassis-pb12k.pdf
Date
PREV: LG 50PT250B-SA (CHASSIS:PB11K) Service Manual

LG 50PT250B-SG (CHASSIS:PB12K) Service Manual ▷ View online

11. Analog TV Audio Trouble Shooting
Follow procedure analog TV video 
trouble shooting
N
Check video output
Y
Check SIF Signal
TU1300 #9 Pin
N
Y
N
Y
Follow procedure All source audio 
trouble shooting
N
Maybe Mstar S7LR audio block has 
problems. 
Replace It
N
Y
Check Tuner Power
(5.0V, 3.3V, 1.2V)
Replace one of  L506/L509/IC600
& Recheck
Maybe Tuner(TU1300) has problems
Replace one of
C252/R246/R1332/Q1304/R1325
IC600 & Recheck
Check SIF Signal
< SIF waveform – sample >
- Defend on the input signal.
12. Component / RGB / AV Audio Trouble Shooting
(Front-end)
(External Input)
(System + Scalar)
I2S_S7LR
STA368
STA368
AV1
AV1_LR
COMP1_LR
COMP2_LR
RGB_LR EXT_IN
AV2
AV2_LR
(Audio Out)
(Comp1/2, RGB)
(USB)
REAR HDMI_PORT
SIDE HDMI_PORT
REAR HDMI_PORT
HDMI 1
HDMI 2
HDMI 3
Side USB
DDR3
256MB(128*2)
DDR3
256MB(128*2)
S7LR
S7LR
HD
LVDS
NANDFlash
128MB
NANDFlash
128MB
SPDIF
I2S_S7LR
Serial_Flash
1MB
Serial_Flash
1MB
EXT_IN
HDMI 1
CVBS
TP
SIF
HDMI 2
HDMI 3
USB2.0
Side USB
CVBS
SIF
Cab
le
ISDB-T/
PAL/NTSC
IF
Demodulator
MN884433
TP
12. Component / RGB / AV Audio Trouble Shooting
Y
Check Jack JK1000/JK1002/P900
N
Y
Check Signal
C206/C207/C208/C209/C210/C211
C212/C220/C221/C222/C223/C224
C225/C205/R166/R167/R168/R169
R170/R171/R127/C215/C216/C203
C217/C218/C219/C204/R187/R188
C226/C227
N
Replace Jack
Check Video Output
Replace one of
C206/C207/C208/C209/C210/C211
C212/C220/C221/C222/C223/C224
C225/C205/R166/R167/R168/R169
R170/R171/R127/C215/C216/C203
C217/C218/C219/C204/R187/R188
C226/C227   & Recheck
N
Follow procedure external input 
video trouble shooting
Y
Follow procedure All source audio 
trouble shooting
N
Maybe Mstar S7LR audio block has 
problems. 
Replace It
13. HDMI Audio Trouble Shooting
(Front-end)
(External Input)
(System + Scalar)
I2S_S7LR
STA368
STA368
AV1
AV1_LR
COMP1_LR
COMP2_LR
RGB_LR EXT_IN
AV2
AV2_LR
(Audio Out)
(Comp1/2, RGB)
(USB)
REAR HDMI_PORT
SIDE HDMI_PORT
REAR HDMI_PORT
HDMI 1
HDMI 2
HDMI 3
Side USB
DDR3
256MB(128*2)
DDR3
256MB(128*2)
S7LR
S7LR
HD
LVDS
NANDFlash
128MB
NANDFlash
128MB
SPDIF
I2S_S7LR
Serial_Flash
1MB
Serial_Flash
1MB
EXT_IN
HDMI 1
CVBS
TP
SIF
HDMI 2
HDMI 3
USB2.0
Side USB
CVBS
SIF
Cab
le
ISDB-T/
PAL/NTSC
IF
Demodulator
MN884433
TP
Page of 63
Display

Click on the first or last page to see other 50PT250B-SG (CHASSIS:PB12K) service manuals if exist.

RANDOM: