AOC L19WA91 - Repair Flowchart: No Power

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5. Repair Flow Chart
1. No Power (No LED Indicator)
2. Can not Start (LED Indicator Yellow)
NG
Re
p
air ke
y
board or remote control
OK
Check U151
,
U153
,
U154
,
U157
,
U158
NG
Re
p
lace U151
,
U153
,
U154
,
U157
,
U158
Check U401
NG
Re
p
lace U401
OK
OK
Check ke
y
board or remote control
Check I
2
C communication
Can not start
OK
Check U400
NG
Re
p
lace U400
OK
NG
Check power cord and board interface
Plug in power cord and interface
OK
Check F901, BD901, C905
NG
Replace F901 or BD901 or C905
OK
Check D901, D902
Check D904, C930, C915
NG
Replace D901 or D902
OK
Check T901
OK
Replace T901
Replace D904 or C930 or C915
NG