Vizio P42HDTV10A Service Manual - Page 105
Trouble shooting - power board
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Chapter 10 Trouble shooting MONITOR DISPLAY NOTHING (PC MODE) Start LED is lighted Ye LED is lighting? Ye U9 no data out? Ye Ye U9 no data in? N0 1. Is Power board output +5V? 2. Is J1 connector good? 3. Is DC-DC OK? 4. Is U4 (3.3V) working ok? It is in power saving N0 1. Check video cable 2. Is the timing supported? 3. Check sync input 4. Check VGASOG rout if analog (SOG) N0 It means data to LVDS 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? 1. Check P3 D-sub Input correct END CONFIDENTIAL - DO NOT COPY Page 10-1 File No. SG-0184
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CONFIDENTIAL – DO NOT COPY
Page 10-
1
File No. SG-0184
N0
Ye
N0
Ye
N0
Ye
N0
Chapter 10
Trouble shooting
MONITOR
DISPLAY
NOTHING
(PC
MODE)
Start
LED is lighted
1.
Is Power board output
+5V?
2.
Is J1 connector good?
3.
Is DC-DC OK?
4.
Is 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)
It means data to LVDS
1.Is J6 connecting well?
2.Check J1 +5V&+12V
3.Is panel ok?
U9 no data in?
1.Is U9 working good?
2.Is U11&U12 working good?
3.IS U10 working good?
1.
Check P3 D-sub Input
correct
END
U9 no data out?