Acer S191HQL - Troubleshooting Dim Display

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5. Troubleshooting
1. No Power
Check Power “On/Off”
is “On”?
Replace main board and check connections
Check the LED
indicate is OK?
Check the AC power
Replace the power board and check connections
OK
NG
OK
NG
NG
Turn on the Power “On/Off” switch
Replace key board and check connections
NG
OK
NG
No power
Check power cable is
tightened or adapter is
ok?
Re-plug the power cable or
replace the adapter