Dell E153FPTc Service Manual page 42

9.2.2 Inverter/Power Board
No Power
Check to CON102 Pin5=12V
Check AC line volt 110V or 220V
Check the voltage of C904(+)
Check start voltage for the pin3 of IC901
Check the auxiliary voltage is between 10V-16V
Check D910, D911, ZD904
NG
OK
NG
OK
NG
OK
NG
OK
NG
OK
Check Interface board
Check AC line
Check F901, bridge rectified circuit
Check R906, R907, IC901
1) Check IC902, IC903
2) Check Q901, Q902 OVP circuit
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DELL E153FPTc