DOWNLOAD LG 32LN5100 (CHASSIS:LL35B) Service Manual ↓ Size: 5.38 MB | Pages: 58 in PDF or view online for FREE

Model
32LN5100 (CHASSIS:LL35B)
Pages
58
Size
5.38 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
32ln5100-chassis-ll35b.pdf
Date

LG 32LN5100 (CHASSIS:LL35B) Service Manual ▷ View online

C. Audio error
No audio/ Normal video  
Established
date 
Revised date 
9/14
LCD  TV
Error
symptom
Standard Repair Process
2013. 01 .24
No audio
Screen normal
Check user 
menu  > 
Speaker off
Off
N
Y
Check audio B+ 24V 
of Power Board
Normal
voltage
Y
N
A15
A16
Cancel OFF 
Replace Power Board and repair parts
Check Speaker 
disconnection
N
Y
Replace Speaker
Replace MAIN Board
End
Disconnection
Replace Speaker 
9 /  37
C. Audio error
Wrecked audio/ discontinuation/noise 
Established
date 
Revised date 
10/14
LCD  TV
Error
symptom
Standard Repair Process
2013. 01 .24
→ abnormal audio/discontinuation/noise is same after “Check input signal” compared to No audio
Wrecked audio/
Discontinuation/
Check and replace 
Check audio
A16
Discontinuation/
Noise for 
all audio
speaker and 
connector
Y
Normal
voltage?
Check input 
signal
-RF
-External Input 
signal
Signal 
normal?
Y
Check audio 
B+ Voltage (24V)
N
Wrecked audio/
Discontinuation/
Noise only 
for RF
Replace Power B/D
N
voltage?
signal
Replace Main B/D
N
Wrecked audio/
Discontinuation/
Noise only
(When RF signal is not 
received)
Request repair to external 
cable/ANT provider
Replace Main B/D
End
Noise only 
for External Input
Connect and check 
other external device
N
Y
Normal
audio?
(In case of External 
Input signal error)
Check and fix 
external device
Check and fix external device
10 / 37
D. Function error
Remote control & Local switch checking
Standard Repair Process
Established
date 
Revised date 
11/14
LCD  TV
Error
symptom
2013. 02. 02
Y
1. Remote control(R/C) operating error
Check R/C itself
Normal
Check & Repair
Normal
Check B+ 3 5V
A17
Normal
N
Check IR
Normal
Y
A17
Replace
Main B/D
Y
A17
Y
N
Check R/C itself 
Operation
Normal
operating?
Y
Check R/C Operating
Check & Replace
Cable connection
Connector solder
Normal
operating?
Check B+ 3.5V
On Main B/D
Normal
Voltage?
Close
Check 3.5v on Power B/D
A4
Check IR
Output signal
Normal
Signal?
N
Repair/Replace
IR B/D
N
Normal
operating?
Close
If R/C operate,
Explain the customer 
cause is interference
When turn off light
in room
Baterry of R/C 
Replace Power B/D or
Replace Main B/D
(Power B/D don’t have problem)
IR B/D
Replace R/C 
cause is interference
from light in room.
N
11 / 37
D. Function error
External device recognition error 
Established
date 
Revised date 
12/14
LCD  TV
Error
symptom
Standard Repair Process
2013. 02. 02
Check technical 
information
- Fix information
S/W Version
N
Technical 
information?
Check 
input 
signal
Signal
input?
Y
External Input and
Component
Recognition error
Replace Main B/D
- S/W Version
Y
g
N
Check and fix 
external device/cable
RGB,HDMI/
DVI, Optical
Recognition error
Replace Main B/D
Fix in 
accordance 
ith t h i l
with technical 
information
12 / 37
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