No Power - BenQ E24-5500 Service Manual

No Power

Replace the converter board
Replace main board and check connections
Replace key board and check connections
No power
Check power cable is
tightened?
OK
Check Power "On/Off"
is "On"?
OK
Check the LED
indicates is OK?
OK
NG
NG
NG
Re-plug the power cable
NG
Turn on the Power "On/Off" switch
NG
Check the AC power
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