HP W19 Service Manual page 34

19" LCD Color Monitor
9.2.2 Power Board
Check AC line volt 110V or 220V
Check the voltage of C904(+)
Check the auxiliary voltage is between 10V-16V
Check D904,D905,IC903
No power
NG
OK
NG
OK
Check start voltage for the Pin7 of IC901
NG
OK
NG
OK
Check AC line
Check F901, bridge rectified circuit
Check R903~R904,IC901
Check IC901,T901,Check ZD901
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HP W19