DOWNLOAD LG 42LV3710-TB / 42LV371Y-TB / 42LV3730-TD (CHASSIS:LB12B) Service Manual ↓ Size: 9.22 MB | Pages: 87 in PDF or view online for FREE

Model
42LV3710-TB 42LV371Y-TB 42LV3730-TD (CHASSIS:LB12B)
Pages
87
Size
9.22 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
42lv3710-tb-42lv371y-tb-42lv3730-td-chassis-lb12b.pdf
Date
PREV: LG 42LV3700-ZC / 42LV3701 / 42LV370S-ZC / 42LV375G-ZC / 42LV375S-ZC / 42LV375W-ZC (CHASSIS:LD12B) Service Manual

LG 42LV3710-TB / 42LV371Y-TB / 42LV3730-TD (CHASSIS:LB12B) Service Manual ▷ View online

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
Replace 
module
Check color condition by input
-External Input
-Component
-RGB
-HDMI/DVI
Check Test mode
RGB  screen
End
Vertical/Horizontal bar, residual image, light spot
Request 
repair for 
external 
device
Established 
date 
Standard Repair Process
Revised date 
LCD  TV
A. Video error
Vertical/Horizontal bar, residual image, 
light spot, external device color error 
☞A-4-1
Error 
symptom
Use Picture Test
Color
error?
N
N
Replace Main B/D
Color
error?
Y
End
Y
Replace 
module
P-5-1
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
Replace 
module
Check color condition by input
-External Input
-Component
-RGB
-HDMI/DVI
Check Test mode
RGB  screen
End
Vertical/Horizontal bar, residual image, light spot
Request 
repair for 
external 
device
Established 
date 
Standard Repair Process
Revised date 
LCD  TV
A. Video error
Vertical/Horizontal bar, residual image, 
light spot, external device color error 
☞A-4-1
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 
of External Input, 
Component, RGB 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
Error 
symptom
P-5-2
Established
date 
Standard Repair Process
Revised date 
LCD  TV
B. Power error
No power
Red lamp
display
Y
N
Check Power 
On Key
operation
Y
N
Normal 
operation?
Check Power 
On ‘”H”
Check AC 
cord 
connection 
and voltage
Check ST-BY
(Lamp)
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
voltage?
Check ST-BY 3.5V
Check and fix outlet and power cord connected condition
Replace Power B/D
N
Y
Normal
voltage?
Replace Power 
B/D
Y
☞B-1-1
☞B-1-2
☞B-1-3
☞B-1-3
☞B-1-4
※ For Pacific 2, operation display LED can be off even with ST-BY output of 3.5V
→ In this case, replace the Digital B/D instead of the Power Board
Error 
symptom
P-6
Established 
date 
Standard Repair Process
Revised date 
LCD  TV
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/D
Key Time
Out
CPU
Abnormal 
On 15
Minute
Reset Off mode
(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
* Caution
Check and fix exterior
of Power B/D/Part
Describe 
situation
Not a problem
※ If there is 
no signal, it is 
the 15 min 
OFF function
☞B-2-1
☞B-2-2
Error 
symptom
P-7
Page of 87
Display

Click on the first or last page to see other 42LV3710-TB / 42LV371Y-TB / 42LV3730-TD (CHASSIS:LB12B) service manuals if exist.

RANDOM: