AOC 712SI User Manual

17” LCD Color Monitor AOC 712Si
29
8.2 Trouble Shooting
8.2.1 Main Board
No Power (No LED indicator)
No picture（LED green）
Rewrite SW
NG
Check U3, U4=5v
NG
Check ada
p
ter and connector
OK
Check U2 supply voltage
NG
Check U2、U3 and U4 if OK
NG
Change defective component
OK
Check key circuit if ok
Chan
g
e defective com
p
onent
OK
Check U2 （
p
in PWR、RST ）and
NG
Chan
g
e defective com
p
onent
NG
The button under control
OK
Check U2 BL EN is hi
g
h volta
g
e
A
nal
y
se inverter
OK
NG
Change U2
Check U2、pin50 and pin51 waveforms
is normal
NG
Check C29 and Y1 is OK
Chan
g
e U2
NG
Chan
g
e defective com
p
onent
OK
NG

AOC 712SI Specifications

General

Brand	AOC
Model	712SI
Category	Monitor
Language	English