22" LCD Color Monitor HP LP2275w
46
9.2.2 Power/Inverter Board
1. No Power
Check AC line volt 110V or 220V
OK
Check AC line
Check the voltage of L903
Check F901, bridge rectified circuit
Check start voltage for the pin8of IC901
Check Q903,Q904
Check the auxiliary voltage is between 10V-16V
Check IC901,T901, D910,D901,Q901
OK
OK
No power
NG
NG
NG