HP LE1901w

19" LCD Color Monitor HP LE1901w
42
9.2.2 Power Board
1. No Power
Check AC line volt 110V or 220V
OK
Check AC line
Check the voltage of C905(+)
Check F901, bridge rectified circuit
Check start voltage for the pin3 of U901
Check R904,R905,R906,U901
Check the auxiliary voltage is between 5V-12V
Check Q901,Q902,U902,U903,ZD902
OK
OK
No power
NG
NG
NG
Check U901
OK
NG