No Picture (Led Orange) - Dell E178FPC Service Manual

17" LCD Color Monitor

No picture (LED orange)

No picture
Measure U701 PIN2=3.3V
C702 "-"=1.8V
NG
OK
X401 oscillate
waveform is normal
NG
OK
Whether the reset
of the Scalar IC is
useful?
NG
OK
Check HS/VS from
Replace U401
CN405 is normal
NG
OK
Replace U401
Replace Q702, U702
Replace X401
Check C418, D414,
D415, R404
Check Correspondent
component
50
Dell E178FPC