Specifications

20" LCD Color Monitor Dell SP2009Wc
51
No picture (LED orange)
No picture
The button if
under control
X402 oscillate
waveform is normal
Replace U402
Replace X402
Measure U701 PIN2=3V
U702 PIN2=2V
Check Correspondent
component
Replace U401
X401 oscillate
waveform is normal
Replace
U701, U702
OK
OK
OK
OK
OK
NG
NG
NG
NG
Check reset circuit of
U402 is normal
Check HS/VS from
CN101is normal
Replace X401
Check Correspondent
component
NG
NG
OK
Replace U401