tech bulletin 4[1]
TRANSCRIPT
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LG Electronics. Inc.2008
LED LCD TV Repair Guide
New models 2009
Applicable to model numbers xxLH9000
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LG Electronics. Inc.2008
LGE3369A
IC100
RGB
COMPONENT
F SCART
AV
BUF_TS_CLK/ERR/SYN/DATA[0]
AV_CVBS_IN
COMP_Y/Pb/Pr
SC1_CVBS_IN
SC2_CVBS_IN
DSUB_ R/G/B
74LVC541
A
Buffer
IC502
CISlot
FE_VMAIN
FE_TS_DATA[0:7] CI_MDI[0:7]
H SCART
SC1_R/G/B
FE_VOUT
DTV/MNT_VOUT
MAX3232CDRIC403
SPDIF
SPDIF_OUT
DSUB_H/VSYNC
CI_TS_DATA[0:7]
CI_Data[0:7] PCM_D[0:7]
PCM_A[8:14]
AUDIO IN(PC)
DGB_TX/RX
DDR2 SDRAM(1Gb)IC300
NAND FlashIC102
(64MB)
USB
PCM_A[0:7]
SDDR_D[0:15]
TDDR_D[0:15]
SDDR_A[0:12]
MP6211DH
IC402
USB Power
TDDR_A[0:12]
USB1_DM/DP
Serial FlashFor BootIC103
HDMI
1/2/3
Rear :
3
LGE7329AIC900
PanelLED
200Hz
TMDS351PAGRIC604
TMDS[0:7]HDMI_CEC
HPD
5V_HDMI
I2C
1. LH9000-ZA Block Diagram
TDFW-G235DTU1200
74LCX244
Buffer
IC501
PCM_A[0:7]
CI_ADDR[0:7]
LVDS
EEPROMIC105
I2C
SPI_CK/CS/D0/D1
Side AV
USB0_DM/DP
HDMI
4 Side
AUDIO Out (HeadPhone)
RS-232C
DDR2 SDRAM(512Mb)IC301
Digital amp(NTP3100L)
IC701
I2S L/R
TMDS[0:7]HPD,5V_HDMI
AudioSwitchIC702
AUDIO Out (B/THeadset)
LG5110IC3502
LVDS
Local Key
LED Assy
IR & RGB Sensor
DDR2 SDRAM(512Mb)
IC1000/IC1001
EEPROMIC3504
Serial FlashIC902
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Contents of LED LCD TV Standard Repair Process
No. Error symptom (High category) Error symptom (Mid category) Page Remarks
1 No video/Normal audio 1
2 No video/No audio 2
3 Video error, Picture broken/ Freezing 3
4 Color error 4
5
A. Video error
Vertical/Horizontal bar, residual image,
light spot, external device color error5
6 No power 6
7B. Power error Off when on, off while viewing, power auto
on/off7
8 No audio/Normal video 8
9C. Audio error
Wrecked audio/ discontinuation/ noise 9
10 No response in remote controller, key error 10
11D. Function error
External device recognition error 11
12 E. Noise Circuit noise, mechanical noise 12
13 F. Exterior error Exterior defect 13
First of all, Check whether there is SVC Bulletin in GCSC System for these model.
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Normal
audio
Y
NMove to No
video/No audio
No video
Normal audioCheck Back Light
On with naked eyeOn
Y
N
Check Power
Board
12v,5v etc.
Normal
voltage
Y
N
Replace Main Board
Repair Power
Board or partsCheck Power Board 20V /12V or 24v output
Normal
voltage
YReplace LED
Drive B/D or
module
N
Repair Power
Board or parts
End
Always check & record S/W Version and White
Balance value before replacing the Main BoardReplace Main Board Re-enter White Balance value
Precaution
Established
dateElectronics 6-3
Standard Repair Process
Revised date
2009. 7 .29
1/13
Error
symptom
A. Video error
No video/ Audio OK
A3A1
A2
A4 & A7
1
First of all, Check whether all of cables between board is inserted properly or not.(Main B/D Power B/D, LVDS Cable,Speaker Cable,IR B/D Cable,,,)
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Normalvoltage?
Check various
voltages of PowerBoard ( 5V,12V,20V
or 24V)
No Video/No audio
Check and
replaceMAIN B/D
Y
Replace Power
Board and repair
parts
N End
Standard Repair Process
A. Video error
No video/ No audio
A5
Established
dateElectronics 6-3
Revised date 2/13
Error
symptom
2
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A. Video error
Picture broken/ Freezing
Y
N
A6
N
Check RF Signal level
Normal
Signal?
Check RF CableConnection
1. Reconnection
2. Install Booster
Check
S/W Version
Booster menuOn
Off: Check
OffOn: Check
S/W Upgrade
Check whether other equipments have problem or not.
(By connecting RF Cable at other equipment)
DVD Player ,Set-Top-Box, Different maker TV etc`
SVC
Bulletin?
Replace
Main B/D
Check
Tuner soldering
Normal
Picture?
Y
N
Y
Close
Normal
Picture?
YClose
MenuSetup Booster
. By using Digital signal level meter
. By using Diagnostics menu on OSD
( MenuSetupDiagnostic)
- Signal strength (Normal : over 50%)
- Signal Quality (Normal: over 50%)
Normal
Picture?
Y
Contact with signal distributor
or broadcaster (Cable or Air)
NN
Normal
Picture?
Y
Close
N
A7
Standard Repair Process
Established
dateElectronics 6-3
Revised date 3/13
Error
symptom
3
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Color
error?
Y
N
Check
and replace
Link Cable
(LVDS) andcontact
condition
Y
N
Replace Main B/DColor
error?
Check error
color input
mode
Check color by input
-External Input
-COMPONENT
-RGB-HDMI/DVI
YExternal device
/Cable
normal
External Input/
Component
error
Checkexternal
device and
cable
YExternal device
/Cable
normal
RGB/
HDMI/DVI
error
Check external
device and
cable
Replace Main B/D
Replace Main B/D
N
N
A. Video error
Color error
A8
N
Y
End
Replace module
Request repair
for external
device/cable
Replace
T-Con
Board
N
Y
Color
error?
LGD ModuleOnly
Other Module
Color
error?
Check Test pattern
A11
A10A27
Standard Repair Process
Established
dateElectronics 6-3
Revised date 4/13
Error
symptom
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Screen
normal?
N
YCheck external
device
connection
condition
Y
N
Check and
replace Link
Cable
Normal?
Y
NScreen
normal?Replace Main B/D
Replace
module
Check color condition by input
-External Input
-Component
-RGB
-HDMI/DVI
End
Vertical/Horizontal bar, residual image, light spot
Request repair
for external
device
A. Video error
Vertical / Horizontal bar, residual image,light spot, external device color error
A14
External device screen error-Color error
External
Input
error
Connect other external
device and cable(Check normal operation of
External Input, Component,RGB and HDMI/DVI by
connecting Jig, pattern
Generator ,Set-top Box etc.
N
Y
Replace
Main B/D
Screen
normal?
Check screen
condition by
input
-External Input
-Component
-RGB
-HDMI/DVI
Request repair for
external device
Component
error
RGB
error
HDMI/
DVI
Connect other external
device and cable
(Check normal operation ofExternal Input, Component,
RGB and HDMI/DVI by
connecting Jig, pattern
Generator ,Set-top Box etc.
Replace
Main B/DScreen
normal?
N
Y
Check S/W Version
Y
NCheck
version
S/W Upgrade
Y
NNormal
screen?
End
Y
N
Replace T-Con Board
LGD Module Only
Replace
Module
Other Module
Replace module
in abnormal displaying
after exchanging T-Con B'd
End
Established
dateElectronics 6-3
Revised date 5/13
Error
symptom
Standard Repair Process
A12A13
Check Test pattern
A27
5
Screen
normal?
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B. Power error
No power
Power LED
On?
Y
N
DC Power on
by pressing Power Key
On Remote control
Y
NNormal
operation?Check Power
On High
Check Power cord
was inserted properly
Check
Power LED
Replace
Power
B/D
Measure voltage of each output of Power B/D
N
YNormalvoltage?
Replace Main B/D
N
YOK?
Replace Main B/D
N
Y
Normal? Check ST-BY 5V
Replace Power B/D
N
YNormal
voltage?
Replace Power
B/D
Y
A15
A16
A17
A18
Standard Repair Process
Established
dateElectronics 6-3
Revised date 6/13
Error
symptom
09 years new model apply mechanical power switch
to reduce power consumption in stand-by status.
If mechanical power switch off Doesnt turn on by remote control
Doesnt appear LED light
Please refer to the A21 Page
6
. Stand-By: Red
. Operating: Green
Check & Repair
Mechanical Power switch
on Local control of TV
A19
Close
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B. Power error
Off when on, off while viewing, power auto on/off
Error?N
Y
Check Power Off
Mode
Fix A/C code & Outlet
and describe 3 wave
length
Check A/C code
Check for 3 wave length
Check outlet
Replace Main B/DCPU
Abnormal
(If Power Off mode
is not displayed)
Check Power B/D
voltage
Y
N
Replace Main B/DNormal
voltage?
Replace Power B/D
Replace Power B/D
N
YNormal? End
Caution
Check and fix exterior
of Power B/D Part
A20
A21
Established
dateElectronics 6-3
Revised date 7/13
Error
symptom
Standard Repair Process
7
Status Power off List Explanation
"POWEROFF_REMOTEKEY" Power off by REMOTE CONTROL
"POWEROFF_OFFTIMER" Power off by OFF TIMER
"POWEROFF_SLEEPTIMER" Power off by SLEEP TIMER
"POWEROFF_INSTOP" Power off by INSTOP KEY
"POWEROFF_AUTOOFF" Power off by AUTO OFF
"POWEROFF_ONTIMER" Power off by ON TIMER
"POWEROFF_RS232C" Power off by RS232C
"POWEROFF_RESREC" Power off by Reservated Record
"POWEROFF_RECEND" Power off by End of Recording
"POWEROFF_SWDOWN" Power off by S/W Download
Normal
"POWEROFF_UNKNOWN" Power off by unknown status except listed case
"POWEROFF_ABNORMAL1" Power off by abnormal status except CPU troubleAbnormal
"POWEROFF_CPUABNORMAL" Power off by CPU Abnormal
* Please refer to the all cases which
can be displayed on power off mode.
Abnormal1
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No audio
Screen normal
Check user
menu >
Speaker off
OffN
Y
Cancel OFF and describe
Check audio B+
20V or 24V of
Power Board
Normal
voltage
Y
N
Replace Power Board and repair parts
Check
Speaker
disconnection
N
Y
Replace Speaker
Replace MAIN Board End
C. Audio error
No audio/ Normal video
A22 A23
Disconnection
Established
dateElectronics 6-3
Revised date 8/13
Error
symptom
Standard Repair Process
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Wrecked audio/discontinuation/noise is same after Check input signal compared to No audio
C. Audio error
Wrecked audio/ discontinuation/noise
Wrecked audio/
Discontinuation/
Noise for
all audio
Check and replace
speaker and
connector
Wrecked audio/
Discontinuation/
Noise only
for D-TV
Wrecked audio/
Discontinuation/
Noise only
for Analog
Wrecked audio/
Discontinuation/
Noise only
for External Input
Connect and check
other external
device
N
Y
Normal
audio?
Check and fix external device
Replace Power B/D
N
Y
Normalvoltage?
Check input
signal
-RF
-External Inputsignal
Signal
normal?
(When RF signal is not
received)
Request repair to external
cable/ANT provider
Y
Check audio
B+ Voltage (20V or 24V)
Replace Main B/D
(In case of
External Input
signal error)
Check and fixexternal device
Replace Main B/DN
End
Established
dateElectronics 6-3
Revised date 9/13
Error
symptom
Standard Repair Process
A24
9
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D. General Function Problem
Remote control & Local switch checking
Y
N
1. Remote control(R/C) operating error
MovePower problemSection
2. Local(Mechanical) switch operating error
Check R/C itself
OperationNormal
operating?
Normaloperating?
Y
Close
Replace R/C
If R/C operate,
Explain the customer
cause is interference
from light in room.
Check R/C OperatingWhen turn off light
in room
Check & ReplaceBaterry of R/C
Check & Repair
Cable connection
Connector solder
Normaloperating?
Check B+ 5V
On Main B/D
A25
NormalVoltage?
Close
N
N
Check 5v on Power B/D
Replace Power B/D or
Replace Main B/D
(Power B/D dont have problem)
A21
Check IR
Output signalNormalSignal?
N
Y
Repair/ReplaceIR B/D
N
A25
Replace
Main B/D
Y
Y
N
Check R/C
OperationNormal
operating?
Y
Check & Repair
Cable connection
Connector solder
Normaloperating?
Close
N Check & Replace
Assembly status
(Key PCB + tool )
A25
Check Key
Output signal
Y
Normaloperating?
Close
N NormalSignal?
Repair/Replace
Local switch B/D
N
Replace
Main B/D
Y
p
Established
dateElectronics 6-3
Revised date 10/13
Error
symptom
10
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Standard Repair Process
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Check
location of
noise
Identify
nose
type
Circuit
noise
Replace LED drive B/D
Replace LIPS B/D
Mechanical
noiseCheck location
of noise
OR
When the nose is severe, replace the module
(For models with fix information, upgrade theS/W or provide the description)OR
If there is a Tak Tak noise from the
cabinet, refer to the KMS fix information and
then proceed as shown in the solution manual
(For models without any fix information,
provide the description)
OR
Mechanical noise is a natural
phenomenon, and apply the 1st level
description. When the customer does not
agree, apply the process by stage.
Describe the basis of the description
in Part related to nose in the Owners
Manual.
E. Noise
Circuit no ise, mechanical noise
Established
dateElectronics 6-3
Revised date 12/13
Error
symptom
12
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Replace module
Zoom part with
exterior damage
Module
damage
Cabinet
damage Replace cabinet
Replace remote controllerRemote
controller
damage
Stand
dent Replace stand
F. Exterior defect
Exterior defect
Established
dateElectronics 6-3
Revised date 13/13
Error
symptom
13
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Establisheddate
Standard Repair Process Detail Technical Manual
Reviseddate
A1
Error
symptom
Content Check LCD back light with naked eye
A. Video error_No video/Normal audio Electronics 6-3
A1
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Remove back cover Power On Check backlighting at 4 points.Remove back cover Power On Check backlighting at 4 points.
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Electronics 6-3
Sta da d epa ocess eta ec ca a ua
LED drive B+ 24V measuring method
A. Video error_No video/Normal audio
A2
Establisheddate
Reviseddate
Error
symptom
Content
A2
Measure DC 24V applying to LED drive B/D from Power Board.
Output 24V from Power Board -> supply to LED drive B/D.
Check Pin contacting statement and connection statement.
LED drive B/D
POWERBOARD
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Electronics 6-3
p
Check LED drive B/D supply voltage
A. Video error_No video/Normal audio
A3
Establisheddate
Reviseddate
Error
symptom
Content
A3
Check each vol tage output (5.2V,12V,24V) from power board.
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Entry method
1. Press the ADJ button on the remote controller for adjustment.
2. Enter into White Balance of item 6.
3. After recording the R, G, B (GAIN, Cut) value of Color Temp
(Cool/Medium/Warm), re-enter the value after replacing the MAIN BOARD.
Electronics 6-3
p
Check White Balance value
A. Video error_No video/Normal audio
A4
Establisheddate
Reviseddate
Error
symptom
Content
A4
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Electronics 6-3
Check LED drive B/D supply voltage
A. Video error_No video/Normal audio
A5
Establisheddate
Reviseddate
Error
symptom
Content
A5
Check each vol tage output (5.2V,12V,24V) from power board.
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Check MENU - SETUP - Diagnostics - Signal Strength / Quality
When the signal is strong, use the
attenuator (-10dB, -15dB, -20dB etc.)
TUNER input signal strength checking method
A. Video error_Video error , video lag/stop
A6
Establisheddate
Reviseddate
Error
symptom
Content
Electronics 6-3
A6
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LED LCD TV Version checking method
A. Video error_Video error , video lag/stop
1. Checking method for remote controller for adjustment
Press the IN-START with the
remote controller for adjustment
Version
A7
Establisheddate
Reviseddate
Error
symptom
Content
Electronics 6-3
A7
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Standard Repair Process Detail Technical ManualA Vid V ti l /H i t l bError
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LED LCD TV connection diagram (1)
A. Video error _Vert ical /Hor izontal bar,residual image, light spot
A8
Establisheddate
Reviseddate
Error
symptom
Content
Electronics 6-3
A8
2009 . 7. 29
As the part connect ing to the external input , checkthe screen condition by signal
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Checking method:
1. Check the signal strength or check whether the screen is normal when the external device is connected.
2. After measuring each voltage from power supply, finally replace the MAIN BOARD.
TUNER checking part
A. Video error_Video error , video lag/stop
A9
Establisheddate
Reviseddate
Error
symptom
Content
Electronics 6-3
A9
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Check L ink Cable (LVDS) reconnection condi tion
A. Video error_Color error
A10
Establisheddate
Reviseddate
Error
symptom
Content
Electronics 6-3
A10
Link Cable Contacting Statement Check Area
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Standard Repair Process Detail Technical Manual
A Vid C l EstablishedError
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Adjustment Test pattern - ADJ Key
A. Video error_Color error
You can view 6 types of patterns using the ADJ Key
Checking item : 1. Defective pixel 2. Residual image 3. MODULE error (ADD-BAR,SCAN BAR..)
4.Video error (Classification of MODULE or Main-B/D!)
A11
Establisheddate
Reviseddate
Error
symptom
Content
Electronics 6-3
A11
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Standard Repair Process Detail Technical ManualA Video error Vert ical /Hor izontal bar EstablishedError El t i 6 32009 7 29
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LED LCD TV connection diagram (1)
A. Video error _Vert ical /Hor izontal bar,residual image, light spot
A12
Establisheddate
Reviseddate
symptom
Content
LED LCD TVElectronics 6-3
A12
2009 . 7. 29
As the part connect ing to the external input , checkthe screen condition by signal
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Standard Repair Process Detail Technical Manual
A Video error Color error EstablishedError
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Check L ink Cable (LVDS) reconnection condi tion
A. Video error_Color error
A13
Establisheddate
Reviseddate
symptom
Content
Electronics 6-3
A13
Link Cable Contacting Statement Check Area
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Standard Repair Process Detail Technical Manual
A Video error Color error EstablishedError
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Adjustment Test pattern - ADJ Key
A. Video error_Color error
You can view 6 types of patterns using the ADJ Key
Checking item : 1. Defective pixel 2. Residual image 3. MODULE error (ADD-BAR,SCAN BAR..)
4.Video error (Classification of MODULE or Main-B/D!)
A14
dateRevised
date
symptom
Content
Electronics 6-3
A14
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B Power error No power EstablishedError
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Check front display LED
B. Power error _No power
A2
dateRevised
date
symptom
Content
Electronics 6 3
A15
ST-BY Statement : Red Power ON Statement : White
Led Color Difference
Mechanical Button
009 9
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B Power error No power EstablishedError
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Check power input voltage and ST-BY 5V
B. Power error _No power
A14
dateRevised
date
symptom
Content
Electronics 6 3
A16
Power Check Method
1. Check AC220V Input at Power Code.2. Check for Mechanical S/W ON/OFF.
3. Check for connection area and FUSE breaking going to Power
Board
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LED LCD TV
Standard Repair Process Detail Technical Manual
B. Power error No power Establishedd t
Error
symptomElectronics 6-3
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Checking method when power is ON
B. Power error _No power
A17
dateRevised
date
symptom
Content
A17
Check Method at Power ON
1. Check ST-BY DC 5V Output Voltage at Power Board.2. Check Power On High Voltage (about more than DC1.8) to Power Board
1
2
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Standard Repair Process Detail Technical Manual
B. Power error No power Establisheddate
Error
symptomElectronics 6-3
LED LCD TV2009 . 7. 29
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LG Electronics. Inc.2009
_ p
A18
dateRevised
date
symptom
Content
A18
Check each vol tage output (5.2V,12V,24V) from power board.
POWER BOARD voltage measuring method 2009. 9 .01
LED LCD TV
Standard Repair Process Detail Technical Manual
B. Power error No power Establisheddate
Error
symptomElectronics 6-3
LED LCD TV2009 . 7. 29
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LG Electronics. Inc.2009
_ p
A19
dateRevised
date
symptom
Content
A19
Checking mechanical button at bottom or back side
If the mechanical button is selected 'OFF', TV doesn't turn on as well as power led off
This button is applied for saving power consumtion at ST-BY status.
Therefore the position(On or Off) of this mecanical button must be checked before repairingas no power problem.
Mechanical Button
On
LED LCD TV2009. 9 .01
Standard Repair Process Detail Technical Manual
B. Power error_Off when on, of f whi ling viewing Establisheddate
Error
symptomElectronics 6-32009 . 7. 29
LED LCD TV
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LG Electronics. Inc.2009
Entry method
1. Press the IN-START button of the remotecontroller for adjustment
2. Check the entry into adjustment item 3
POWER OFF MODE checking method A15
dateRevised
date
symptom
Content
A20
2009. 9 .01
LED LCD TV
Standard Repair Process Detail Technical Manual
B. Power error_Off when on, off whil ing viewing Establisheddate
Error
symptomElectronics 6-3
LED LCD TV2009 . 7. 29
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LG Electronics. Inc.2009
POWER BOARD PIN voltage checking method A21
dateRevised
date
y p
Content
A21
Check each vol tage output (5.2V,12V,24V) from power board.
2009. 9 .01
LED LCD TV
Standard Repair Process Detail Technical Manual
C. Audio error_No audio/Normal video Establisheddate
Error
symptomElectronics 6-32009 . 7. 29
LED LCD TV
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LG Electronics. Inc.2009
Checking method
1. Press the MENU button on the remote controller
2. Select the AUDIO function of the Menu
3. Select TV Speaker from Off to On
Checking method in menu when there is no audio A16Revised
dateContent
A22
2009. 9 .01
LED LCD TV
C. Audio error_No audio/Normal video Establisheddate
Error
symptomElectronics 6-3
LED LCD TV2009 . 7. 29
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LG Electronics. Inc.2009
Voltage and speaker checking methodwhen there is no audio
A23Revised
dateContent
A23
Check Procedure at No Sound
Check 24V connector contacting point statement of main board.
Measure 24V input voltage supplied by Power Board (remove connector and check it out if there is no inputvoltage)
Put SPK terminal into tester RX1 -> when touching GND and output terminal, if make Cheuk
Cheuk sound, it is OK.
2009. 9 .01
LED LCD TV
Standard Repair Process Detail Technical ManualEstablished
date
Error
symptomElectronics 6-3C. Audio error_Sound distortion/cut 2009 . 7. 29
LED LCD TV
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LG Electronics. Inc.2008
Check Procedure at No Sound
24V connector contacting statement of Main Board.
Measure 24V of input voltage supplied by Power Board (If there is no input voltage, remove connector -> checkit out)
Put SPK terminal into tester RX1 -> when touching GND and output terminal, if make CheukCheuk sound, it is OK.
A24Revised
dateContent Voltage and SPK Check Method at Sound Defect
A24
2009. 9 .01
LED LCD TV
D. Function error_ No response in remote contro ller,
key errorEstablished
dateR i d
Error
symptomElectronics 6-32009 . 7. 29
LED LCD TV
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LG Electronics. Inc.2009
Remote controller operation checking method A18Revised
dateContent
A25
Check Procedure
1. Check DC5V (P402 PIN #6) onto 5V_ST Terminal
2. When checking Pre-Amp at Power On Statement,
If an indicator of analogue tester is moving a little, It is OK. But If not, it is Pre-Amp defect.
(P402 PIN #8)
Input voltage terminal : 5V_ST, The remote receiving terminal : IR
2009. 9 .01
Standard Repair Process Detail Technical Manual
E. Module & T-Con Board Picture Establisheddate
Revised
Error
symptomElectronics 6-32009 . 7. 29
LED LCD TV
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LG Electronics. Inc.2009
The method for checking T-Con B'd A19Revised
dateContent
A26
T-Con Board
1) First of all replace T-Con B'd when abnormal displaying in case LGD module
2) Replace module when abnormal displaying constantly after exchanging T-Con B'd
2009. 9 .01
Appendix : Exchange T-Con Board (1)
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LG Electronics. Inc.2009
Solder defect, CNT Broken
T-Con Defect, CNT BrokenT-Con Defect, CNT BrokenT-Con Defect, CNT Broken
Solder defect, CNT Broken Solder defect, CNT Broken
Solder defect, CNT Broken Solder defect, CNT Broken Abnormal Power Section
Solder defect, Short/Crack Abnormal Power Section Solder defect, Short/Crack
A - 1/5
Appendix : Exchange T-Con Board (2)
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LG Electronics. Inc.2009
Abnormal Power Section Solder defect, Short/CrackAbnormal Power Section
Solder defect, Short/Crack Fuse Open, Abnormal power section
NoiseGRADATION GRADATION
Abnormal Display
A - 2/5
Appendix : Exchange LED drive Board
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LG Electronics. Inc.2009
No Light Dim Light
Dim Light Dim Light
No picture/Sound Ok
A - 3/5
Appendix : Exchange the Module (1)
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LG Electronics. Inc.2009
Panel Mura, Light leakage Press damage
CrosstalkCrosstalk Press damage
Panel Mura, Light leakage
Press damage
A - 4/5
Un-repairable CasesIn this case please exchange the module.
Appendix : Exchange the Module (2)
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LG Electronics. Inc.2009
Vertical BlockSource TAB IC Defect
Horizontal Block
Gate TAB IC Defect
Gate TAB IC Defect Gate TAB IC Defect
Vertical LineSource TAB IC Defect
Vertical BlockSource TAB IC Defect
Horizontal Block
Gate TAB IC Defect
Horizontal line
Gate TAB IC Defect
Gate TAB IC Defect
Horizontal Block
Gate TAB IC Defect
A - 5/5
Un-repairable CasesIn this case please exchange the module.