Acer AL1917

34
White screen
White screen
Measure Q704 base
is high level?5V
X401 oscillate
waveform is normal
Check Q706,is broken o
r
CN405 solder?
Check Corresponden
t
component.
Replace PANEL
Check Corresponden
t
component.
Replace U406
OK
OK
OK
Replace X401
OK
NG
NG
NG
NG
Check reset circuit o
f
U406 is normal