Service manual
Table Of Contents
- VIZIO L42HDTV10A,GV42L_HDTV Service Manual
- 01-FEATURES
- 02-SPECIFITION
- 03-ON SCREEN DISPLAY
- 04-FACTORY PRESET TIMINGS
- 05-PIN ASSIGNMENT
- 06-MAIN BOARD I/O CONNECTIONS
- 07-THEORY OF CIRCUIT OPERATION
- 08-WAVEFORMS
- 09-TROUBLE SHOOTING
- 10-BLOCK DIAGRAM
- 11-SPARE PATRS LIST
- 12-1COMPLETE PARTS LIST_FOR L42 HDTV10A
- 12-2COMPLETE PARTS LIST_FOR GV42L HDTV
- MAIN BOARD CIRCUIT DIAGRAM_FOR L42 HDTV10A
- MIAN BOARD CIRCUIT DIAGRAM_FOR GV42L HDTV
- MAIN BOARD PCB LAYOUT_FOR L42HDTV10A(LG/AUO)
- MAIN BOARD PCB LAYOUT_FOR GV42L HDTV_LG
- ASSEMBLY EXPLOSION DRAWING_FOR L42HDTV10A_AUO
- ASSEMBLY EXPLOSION DRAWING_FOR L42HDTV10A_LG
- ASSEMBLY EXPLOSION DRAWING_FOR GV42L HDTV_LG
CONFIDENTIAL – DO NOT COPY
Page 9-1
File No. SG-0198
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Chapter 9 Trouble shooting
MONITOR DISPLAY NOTHING (PC MODE)
Start
LED is lighted
1. Is Power board output
+5V?
2. Is J7 connector good?
3. Is DC-DC OK?
4. Is U6&U4 (3.3V) working ok?
LED is lighting?
It is in power saving
1. Check video cable
2. Is the timing supported?
3. Check sync input
4. Check VGASOG rout if analog
(SOG)
Is backlight on?
1.Check J7 PIN 14
2.Is inverter ok?
3.Is Power Board ok?
U11 no data out?
It means data to LVDS
1.Is J5 connecting OK?
2.Check J7 +5V&+12V
3.Is panel ok?
4.
Check P3 D-sub Input correct
5. Check analog input route
END