BenQ GW2470H - No Power Troubleshooting

76
No Power
OK
NG
No power
Check power cable is
tightened?
Check Power “On/Off”
is “On”?
Re-plug the power cable
Replace main board and check connections
Check the LED
indicates is OK?
Check the AC power
er
Replace the power board
OK
NG
OK
NG
NG
Turn on the Power “On/Off” switch
Replace key board and check connections
NG