HP L1706 - Power Board Troubleshooting

17" LCD Color Monitor HP L1706
36
9.2.2 Power Board
1. No Power
Repeating the start voltage
Check D920 D921 ZD920…
Check IC902,IC903
Check Q910…OLP circuit
NG
OK
Check AC line volt 100V or 240V
OK
Check AC line
Check the voltage of C907(+)
Check F901, BD901
Check start voltage for the pin3 of IC901
Check R912, R913, IC901
The auxiliary voltage (pin6) is between 5V-12V jumping
1) Check IC901,T901
2) Check D920, D921, ZD920
3) Check IC902, IC921
OK
Check D901, D900
OK
NG
NG (Stable)
No power
NG
NG
OK