LG 32LN570B (CHASSIS:LT33B) Service Manual ▷ View online
13 / 97
Check technical
information
- Fix information
- S/W Version
information
- Fix information
- S/W Version
N
Y
Technical
information?
Check
input
signal
input
signal
Signal
input?
input?
Y
N
External Input and
Component
Recognition error
Check and fix
external device/cable
external device/cable
HDMI/
DVI, Optical
Recognition error
Replace Main B/D
Replace Main B/D
Fix in
accordance
with technical
information
D. Function error
External device recognition error
Established
date
Revised date
11/13
LCD TV
Error
symptom
2012. 12 .21
Standard Repair Process
14 / 97
Check
location of
noise
location of
noise
Identify
noise
type
noise
type
Circuit
noise
Replace PSU(with LED driver)
Replace LED driver
Mechanical
noise
Check location of
noise
noise
OR
※ When the nose is severe, replace the module
(For models with fix information, upgrade the S/W or
provide the description)
(For models with fix information, upgrade the S/W or
provide the description)
※ 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)
refer to the KMS fix information and then proceed
as shown in the solution manual
(For models without any fix information, provide
the description)
※ 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 Owner’s Manual.
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 Owner’s Manual.
E. Noise
Circuit noise, mechanical noise
Established
date
Revised date
12/13
LCD TV
Error
symptom
2012. 12 .21
Standard Repair Process
OR
15 / 97
Replace module
Zoom part with
exterior damage
exterior damage
Module
damage
Cabinet
damage
Replace cabinet
Replace remote controller
Remote
controller
damage
Stand
dent
Replace stand
F. Exterior defect
Exterior defect
Adjust VCOM
Established
date
Revised date
13/13
LCD TV
Error
symptom
☞A28
2012. 12 .21
Standard Repair Process
16 / 97
Contents of LCD TV Standard Repair Process Detail Technical Manual
Continued from previous page
No.
Error symptom
Content
Page
Remarks
21
B. Power error_No power
Check front display LED
A17
22
Check power input Voltage & ST-BY 3.5V
A18
23
Checking method when power is ON
A19
24
POWER BOARD voltage measuring method
A5
25
26
B. Power error_Off when on, off while
viewing
viewing
POWER OFF MODE checking method
A22
27
B. Power error_Off when on, off while
viewing
viewing
POWER BOARD PIN voltage checking method
A19
28
C. Audio error_No audio/Normal video
Checking method in menu when there is no
audio
audio
A24
29
Voltage and speaker checking method when
there is no audio
there is no audio
A25
30
C. Audio error_Wrecked
audio/discontinuation
audio/discontinuation
Voltage and speaker checking method in case of
audio error
audio error
A25
31
D. Function error_ No response in remote
controller, key error
controller, key error
Remote controller operation checking method
A27
32
D. VCOM Adjustment
Sequence of the Vcom adjustment
A28
Click on the first or last page to see other 32LN570B (CHASSIS:LT33B) service manuals if exist.