LG 55G2 - Contents of LCD TV Standard Repair Process Detail Technical Manual; 1 A. Video error_ No video;Normal audio; 4 A. Video error_ No video;Audio

Contents of LCD TV Standard Repair Process Detail Technical Manual
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
3 Check White Balance value A3
4 A. Video error_ No video/Audio Power Board voltage measuring method A4
5
A. Video error_ video error /Video
lag/stop
TUNER input signal strength checking method A6
6 LCD-TV Version checking method A7
7 Tuner Checking Part A8
8
A. Video error _Vertical/Horizontal bar,
residual image, light spot
LCD TV connection diagram A9
9
A. Video error_ Color error
Check Link Cable (LVDS) reconnection
condition
A10
10 Adjustment Test pattern - ADJ Key A12
11
<Appendix>
Defected Type caused by T-Con/
Inverter/ Module
Exchange T-Con Board (1) A-1/5
12 Exchange T-Con Board (2) A-2/5
13 Exchange LED driver Board (PSU) A-3/5
14 Exchange Module (1) A-4/5
15 Exchange Module (2) A-5/5
Continue to the next page
Copyright ⓒ 2012 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only