HP L1706 Service Manual page 36

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