LG 32LN5100 (CHASSIS:LL35B) Service Manual ▷ View online
A. Video error
Tuning fail, Picture broken/ Freezing
Standard Repair Process
Established
date
Revised date
4/14
LCD TV
Error
symptom
2013. 01 .24
☞
A5
Check RF Signal level
Check RF signal cable
Check whether other equipments have problem or not.
(By connecting RF Cable at other equipment)
(By connecting RF Cable at other equipment)
→ Set-Top-Box, Different maker TV etc
Y
N
Normal
Signal?
Check
S/W Version
SVC
Bulletin?
☞
A6
Check
Tuner soldering
Replace
Main B/D
S/W Upgrade
Y
N
Contact with
signal distributor
N
Normal
Picture?
N
Y
signal distributor
or broadcaster
Close
Close
4 / 37
A. Video error
Color error
Standard Repair Process
Established
date
Revised date
5/14
LCD TV
Error
symptom
2013. 01. 24
☞
A7
A8/ A9
Color
error?
Y
N
※
Check and
replace Link
Cable
(LVDS) and
contact
Cable
(LVDS) and
contact
Y
Replace Main B/D
Color
error?
Check color by input
-AV
-COMPONENT
-HDMI
-AV
-COMPONENT
-HDMI
A7
N
Y
Replace module
Color
error?
☞
A8/ A9
N
condition
N
Check error color
input mode
input mode
N
End
Y
External device
/Cable
normal
AV/
Component
error
Check
external
device and
cable
external
device and
cable
Replace Main B/D
N
Check Test pattern
☞
A10
N
Request repair
for external
device/cable
Y
External device
/Cable
normal
HDMI
error
Check external
device and
cable
device and
cable
Replace Main B/D
5 / 37
A. Video error
Vertical / Horizontal bar, residual image,
light spot, external device color error
Established
date
Revised date
6/14
LCD TV
Error
symptom
Standard Repair Process
2013. 01 .24
Vertical/Horizontal bar, residual image, light spot
light spot, external device color error
Replace
Module
Module
☞
A7
Screen
normal?
N
Y
Check external
device
connection
condition
device
connection
condition
Y
N
Check and
replace Link
Cable
replace Link
Cable
Normal?
Y
Screen
normal?
Check color condition by input
-AV
-Component
-HDMI
-AV
-Component
-HDMI
Y
N
Replace Main B/D
Screen
normal?
A7
☞
A8/ A9
N
N
Y
Replace
module
module
End
Request repair
for external
device
for external
device
☞
A10
End
Check Test pattern
External device screen error-Color error
AV
Connect other external
Check screen
condition by input
-AV
condition by input
-AV
Check S/W Version
N
Check
Input
error
Connect other external
device and cable
device and cable
(Check normal operation of
External Input, Component,
and HDMI by connecting Jig,
pattern Generator ,Set-top
Box etc.
External Input, Component,
and HDMI by connecting Jig,
pattern Generator ,Set-top
Box etc.
N
Y
Replace
Main B/D
Main B/D
Screen
normal?
-Component
-HDMI
-HDMI
Component
error
Check S/W Version
Y
N
Check
version
S/W Upgrade
Request repair for
external device
external device
HDMI
Connect other external
device and cable
device and cable
(Check normal operation of
External Input, Component,
and HDMI by connecting Jig,
External Input, Component,
and HDMI by connecting Jig,
Replace
Screen N
Y
pg
N
Normal
screen?
6 / 37
y
g g,
pattern Generator ,Set-top Box
etc.
etc.
p
Main B/D
normal?
Y
End
B. Power error
No power
Standard Repair Process
Established
date
Revised date
7/14
LCD TV
Error
symptom
2013. 01 .24
Power LED
On?
Y
DC Power on
by pressing Power Key
by pressing Power Key
N
Normal
operation?
Check Power
On ‘”High”
On ‘”High”
Check
Power LED
Power LED
Replace
Power
Power
Y
OK?
☞
A11
☞
A13
On?
N
y p
g
y
On Remote control
Y
operation?
On ‘”High”
Check Power cord
was inserted properly
was inserted properly
Power LED
Power
B/D
B/D
Replace Main B/D
☞
A4
. Stand-By: Red
Measure voltage of each output of Power B/D
N
Y
Normal?
☞
A4
N
Y
Normal
voltage?
Replace Main B/D
Y
Check ST-BY 3.5V
Replace Power B/D
Y
Normal
voltage?
Y
☞
A12
※
Close
Replace Power B/D
N
Replace Power
B/D
B/D
B/D
7 / 37
Click on the first or last page to see other 32LN5100 (CHASSIS:LL35B) service manuals if exist.