HP W1707 Service Manual page 33

17" 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 bigger than 10V and smaller than 20V
Check IC901 pin8 PWM wave
Check T901,D907,D905,D906,Q903,IC902,IC903
No power
NG
OK
NG
OK
NG
OK
NG
OK
NG
OK
Check AC line
Check F901, bridge rectified circuit
Check R904, R932, R933,IC901
Check IC901,D901,C908
Check IC901
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HP W1707