Acer A221HQV - Nothing Displays on the Screen

5.1.2 Nothing displays on the screen (Screen is black and colour of LED is blue):
5. Troubleshooting (continued)
Is backlight lit?
Refer "Checking the backlight unit" section"OK NG
Does computer output RGB
video signals?
OK
Check OSM menu is display
on screen when you push
the "MENU" key.
Proceed "Abnormal sreen"
dection"
OK
NG
Check the video cable for failure. Check the
host for output signal is all black or not.
1) Change pattern of video signal output on
the host.
2) Reconnect the video cable.
3) Change the video cable.
NG
Check if the LCD video signal cable is
connected between the Interface Board and
LCD module.
OK
Next Page
NG
Failure Point
The LCD video signal cable is
disconnected.
22
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ACER A211H/A221HQ