I-Inc AG191D User Manual

19" LCD Color Monitor I-INC AG191D
38
2.) No Backlight
Check C811
(
+
)
=12V
NG
OK
Check power section
C
heck
O
N
/O
FF si
g
nal
C
h
ec
k In
te
rf
ace
sect
i
o
n
o
r m
a
in
boa
r
d
NG
OK
CheckIC801 pin 2=5V?
NG
OK
Check Q801 Q802 Q803 ZD801
Check IC801 Pin1/pin15 have the output of sawtooth wave at short time
NG
OK
C
h
ec
k I
C80
1
p
in
5/p
in
6
NG
OK
Re
p
lace IC801
Check Q805/Q806 pin5/pin8 is 12V?
Check PT801/PT802 pin7/pin8= 650V?
Cut all the pin connector of Q805/Q806, check C811 (+)=12V?
OK
NG
Unplug backlight connector wire, check
PT801/PT802 pin7/pin8 = 650V?
OK
NG
Replace backlight
Replace PT801/PT802
OK
NG
NG
Re
p
lace Q805/Q806
Check Q801 Q802
OK
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I-Inc AG191D Specifications

General

Brand	I-Inc
Model	AG191D
Category	Monitor
Language	English