Hanns.G HSD HG191D Service Manual page 37

19" LCD Color Monitor
No Picture (LED orange)
No picture
The button if under
control
OK
Measure U702 Vout=3.3V
Q702 Vc=1.8V
OK
X401 oscillate
waveform is normal
OK
Check HS/VS from
CN405 is normal
OK
Replace U401
NG
X401 oscillate
waveform is normal
Check reset circuit of
U401 is normal
Replace U401
NG
Replace U702, Q702
NG
Replace X401
NG
Check Correspondent
component
37
NG
Replace X401
OK
NG
OK
HSD HG191D
Check Correspondent
component