Service manual

19" LCD Color Monitor ASUS VB191T&S
44
(3). White screen
White screen
Check Q704, Q703 is broken
or CN703 solder?
Check Correspondent
com
p
onent.
Re
p
lace Panel
Check Correspondent
com
p
onent.
Replace U401
OK
OK
Replace X401
OK
NG
NG
NG
NG
Check reset circuit of
U401 is normal
OK
X401 oscillate
waveform is normal
Measure Q704 base
is low level?