DOWNLOAD LG 32LN5700 / 32LN5730 (CHASSIS:LT33B) Service Manual ↓ Size: 9.01 MB | Pages: 97 in PDF or view online for FREE

Model
32LN5700 32LN5730 (CHASSIS:LT33B)
Pages
97
Size
9.01 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
32ln5700-32ln5730-chassis-lt33b.pdf
Date

LG 32LN5700 / 32LN5730 (CHASSIS:LT33B) Service Manual ▷ View online

6 /  97
Color
error?
Y
N
※ Check and 
replace Link 
Cable
(LVDS) and 
contact 
condition
Y
N
Replace Main B/D
Color
error?
Check error 
color input mode
Check color by input
-External Input
-COMPONENT
-AV
-HDMI/DVI
Y
External device
/Cable
normal
External Input/
Component/ AV
error
Check 
external 
device and
cable
Y
External device
/Cable
normal
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
Color
error?
Check Test pattern
A12
☞ A10/ A11
Established
date 
Revised date 
4/13
LCD  TV
Error
symptom
2012. 12 .21
Standard Repair Process
7 /  97
A. Video error
Vertical / Horizontal bar, residual image, 
light spot, external device color error 
Established
date 
Revised date 
5/13
LCD  TV
Error
symptom
External device screen error-Color error
External 
Input
error
Connect other external device 
and cable
(Check normal operation of 
External Input, Component, AV 
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
-AV
-HDMI/DVI
Request repair for 
external device
Component/AV
error
HDMI/
DVI
Connect other external device 
and cable
(Check normal operation of 
External Input, Component, AV 
and HDMI/DVI by connecting 
Jig, pattern Generator ,Set-top 
Box etc. 
Replace 
Main B/D
Screen
normal?
N
Y
Check S/W Version
Y
N
Check
version
S/W Upgrade
Y
N
Normal
screen?
End
Screen
normal?
N
Y
Check external 
device 
connection 
condition
Y
N
Check and 
replace Link 
Cable
Normal?
Y
N
Screen
normal?
Replace Main B/D
(adjust VCOM)
Replace 
module
Check color condition by input
-External Input
-Component
-AV
-HDMI/DVI
End
Vertical/Horizontal bar, residual image, light spot
Request repair 
for external 
device
A12
Y
N
Replace Main B/D
For LGD panel
Replace
Module
Screen
normal?
End
A8
☞ A10/ A11
Check Test pattern
☞ A28
For other panel
2012. 12 .21
Standard Repair Process
8 /  97
B. Power error
No power
Power  LED
On?
Y
N
DC Power on
by pressing Power Key 
On Remote control
Y
N
Normal 
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
Y
Normal
voltage?
Replace Main B/D
N
Y
OK?
Replace Main B/D
N
Y
Normal?
Check ST-BY 3.5V
Replace Power B/D
N
Y
Normal
voltage?
Replace Power 
B/D
Y
A17
A18
A19
A4
Established
date 
Revised date 
6/13
LCD  TV
Error
symptom
. Stand-By: Red or Logo Light ON
. Operating : off
Close
2012. 12 .21
Standard Repair Process
9 /  97
B. Power error
Off when on, off while viewing, power auto on/off
※ Caution
Check and fix exterior   
of Power B/D Part
Established
date 
Revised date 
7/13
LCD  TV
Error
symptom
*  Please refer to the all cases which can be displayed on power off mode.
Click the below Hyper_link
Error?
N
Y
Check Power Off
Mode
Fix A/C cord & Outlet 
and check each 3 
phase out
Check A/C cord
Check for all 3- phase
power out
Check outlet
Replace Main B/D
CPU
Abnormal 
(If Power Off mode is 
not displayed)
Check Power B/D 
voltage
Y
N
Replace Main B/D
Normal
voltage?
Replace Power B/D
Replace Power B/D
N
Y
Normal?
End
A22
A19
Abnormal 
1
2012. 12 .21
Standard Repair Process
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