LG 32LW5700-JA (CHASSIS:LE13E) Service Manual ▷ View online
Check
location of
noise
location of
noise
Identify
nose type
nose 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)
OR
※ 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)
OR
※ 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
Established
date
Revised date
13/14
LCD TV
Error
symptom
Standard Repair Process
13
2011.01.20
3D / 2D to 3D operation error
Replace T-Con Board
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
Established
date
Revised date
14/14
LCD TV
Error
symptom
Standard Repair Process
14
2011.01.20
Contents of LCD TV Standard Repair
Process
Detail Technical Manual
<Appendix>
Defected Type caused by T-Con/ Inverter/
Module
Module
No.
Error symptom
Content
Page
Remarks
1
A. Video error_ No video/Normal audio
Check LCD back light with naked eye
A1
2
LED driver B+ 24V measuring method
A2
A2-1 : LED
A2-2 : ALEF,IOP
3
Check White Balance value
A3
4
Power Board voltage measuring method
A4
A4-1:LED/ A4-2 :ALEF
A4-3 :IOP
5
A. Video error_ No video/Video lag/stop
TUNER input signal strength checking method
A6
6
LCD-TV Version checking method
A7
7
A. Video error_Color error
LCD TV connection diagram
A8
8
Tuner Checking Part
A9
9
Check Link Cable (LVDS) reconnection condition
A10-1/2/3
A10-1 : LED
A10-2:Full LED
A10-3 : IOP
10
Adjustment Test pattern - ADJ Key
A12
11
A. Video error_Vertical/Horizontal bar, residual
image, light spot
image, light spot
LCD TV connection diagram
A8
12
Check Link Cable (LVDS) reconnection condition
A10
A10-1 : LED
A10-2:Full LED
A10-3 : IOP
13
Adjustment Test pattern - ADJ Key
A12
14
Exchange LED driver Board (PSU)
A-1/3
55” : driver board
Other : PSU
Other : PSU
15
Exchange Module itself (1)
A-2/3
16
Exchange Module itself (2)
A-3/3
Continue to the next page
Contents of LCD TV Standard Repair Process Detail Technical Manual
No.
Error symptom
Content
Page
Remarks
17
B. Power error_No power
Check front display LED
A17
18
Check power input Voltage & ST-BY 5V
A18
19
Checking method when power is ON
A19
20
POWER BOARD voltage measuring method
A4
21
B. Power error_Off when on, off while
viewing
viewing
POWER OFF MODE checking method
A22
22
B. Power error_Off when on, off while
viewing
viewing
POWER BOARD PIN voltage checking method
A19
23
C. Audio error_No audio/Normal video
Checking method in menu when there is no audio
A24
24
Voltage and speaker checking method when there
is no audio
is no audio
A25
25
C. Audio error_Wrecked
audio/discontinuation
audio/discontinuation
Voltage and speaker checking method in case of
audio error
audio error
A25
26
D. Function error_ No response in remote
controller, key error
controller, key error
Remote controller operation checking method
A27
Continued from previous page
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