LG 55EA9800-TA (CHASSIS:EB34D) Service Manual ▷ View online
Contents of LCD TV Standard Repair Process Detail Technical Manual
No.
Error symptom
Content
Page
Remarks
1
A. Video error_ No video/Normal
audio
audio
Check LCD back light with naked eye
A1
2
Check White Balance value
A2
4
A. Video error_ video error /Video
lag/stop
lag/stop
TUNER input signal strength checking
method
method
A3
5
LCD-TV Version checking method
A4
6
Tuner Checking Part
A5
7
A. Video error _Vertical/Horizontal bar,
residual image, light spot
residual image, light spot
LCD TV connection diagram
A6
8
A. Video error_ Color error
Check Link Cable (EPI) reconnection
condition
condition
A7
9
Adjustment Test pattern - ADJ Key
A8
10
<Appendix>
Defected Type caused by T-Con/
Inverter/ Module
Defected Type caused by T-Con/
Inverter/ Module
Exchange Main Board (1)
A-1/5
11
Exchange Main Board (2)
A-2/5
12
Exchange Power Board (PSU)
A-3/5
13
Exchange Module (1)
A-4/5
14
Exchange Module (2)
A-5/5
Continue to the next page
Contents of LCD TV Standard Repair Process Detail Technical Manual
No.
Error symptom
Content
Page
Remarks
16
B. Power error_ No power
Check front display LED
A17
17
Check power input Voltage & ST-BY 3.5V
A18
18
B. Power error_Off when on, off
while viewing
while viewing
POWER OFF MODE checking method
A19
19
C. Audio error_ No audio/Normal
video
video
Checking method in menu when there is
no audio
no audio
A20
20
Voltage and speaker checking method
when there is no audio
when there is no audio
A21
21
D. Function error
Remote controller operation checking
method
method
A22
22
Motion Remote operation checking
method
method
A23
23
Wifi operation checking method
A24
24
Camera operation checking method
A25
25
E. Etc
Tool option changing method
A26
Continued from previous page
Established
date
Standard Repair Process Detail Technical Manual
Revised
date
A1
Error
symptom
Content
Check LCD back light with naked eye
A. Video
error_No
video/Normal audio
After Remove the Rear Cover, turning on the power and disassembling the case,
check with the naked eye.
LCD TV
A1
2013.01.31
Established
date
Standard Repair Process Detail Technical Manual
Revised
date
A2
Error
symptom
Content
Check White Balance value
A. Video
error_No
video/Normal audio
LCD TV
A2
Entry method
1. Press the ADJ button on the remote controller for adjustment.
2. Enter into White Balance of item 6.
3. After recording the R, G, B (GAIN, Cut) value of Color Temp
(Cool/Medium/Warm), re-enter the value after replacing the MAIN BOARD.
Entry method
1. Press the ADJ button on the remote controller for adjustment.
2. Enter into White Balance of item 9.
3. After recording the R, G, B (GAIN, Cut) value of Color Temp
(Cool/Medium/Warm), re-enter the value after replacing the MAIN BOARD.
2013.01.31
Click on the first or last page to see other 55EA9800-TA (CHASSIS:EB34D) service manuals if exist.