Vizio L32 Service Manual page 14

Chapter 9
MONITOR DISPLAY NOTHING (PC MODE)
LED is lighted
LED is lighting?
Is backlight on?
U9 no data out?
U9 no data in?
1. Check P3 D-sub Input correct
2. Check analog input route
CONFIDENTIAL – DO NOT COPY
Trouble shooting
Start
Yes
Yes
Yes
Yes
Yes
END
1. Is Power board output
N0
+5V?
2. Is J1 connector good?
3. Is DC-DC OK?
4. Is U4 (3.3V) working ok?
It is in power saving
N0
N0
1.
Check video cable
2.
Is the timing supported?
3.
Check sync input
4.
Check VGASOG rout if analog
(SOG)
N0
1.Check J1 PIN 1
2.Is inverter ok?
It means data to LVDS
N0
1.Is J6 connecting well?
2.Check J1 +5V&+12V
3.Is panel ok?
N0
1.Is U9 working good?
2.Is U11&U12 working good?
3.IS U10 working good?
Page 9-1
File No. SG-0168