Power Board - HP L1950 Service Manual

19" LCD Color Monitor

9.2.2 Power Board

1. No Power
Check AC line volt 110V or 220V
Check the voltage of C907(+)
Check start voltage for the pin8of IC901
Check the auxiliary voltage is between 10V-16V
Check IC901,T901, D905,D906,D907
No power
NG
OK
NG
OK
NG
OK
Check AC line
Check F901, bridge rectified circuit
Check R910,IC901
40
HP L1950