Dell E1909Wc - Page 46

19" LCD Color Monitor Dell E1909Wc
46
No picture (LED orange)
No picture
The button if
under control
X401 oscillate
waveform is normal
Replace U401
Replace X401
Measure U701 PIN2=3.3V
C904(+)=1.8V
Check Correspondent
component
Replace U401
X401 oscillate
waveform is normal
Check CN701 or
replace U701,
Q702,Q703
OK
OK
OK
OK
OK
NG
NG
NG
NG
Check reset circuit of
U401s normal
Check HS/VS from
CN101is normal
Replace X401
Check Correspondent
component
NG
NG
OK
Replace U401