Read LG 42LH250C (CHASSIS:LD91Z) Service Manual online
LCD TV Repair Process Index
- Trouble shooting by input block (Component level check)
No.
Symptom (L)
Input Block
Page
Remark
1
Power Problem
Power-up Boot fail
2
No OSD
3
Digital TV
4
Analog TV
5
AV (Scart / CVBS/ S-Video)
6
Component
7
RGB(D-SUB)
8
Video Problem
HDMI
9
All Input
10
Digital TV
11
Analog TV
12
AV / Component / RGB, HDMI-PC/ HDMI-DTV
13
Audio Problem
AV Audio out / No Audio (Headphone & SPDIF)
14
USB / Remocon Problem
USB no connect / Remocon
15
Commercial Function Problem
Clock Display / RJP / IR Out
Buzzer / External Speaker
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