Acer A221HQV - Troubleshooting for Acer A211 H;A221 HQ(1 A1 D1 H); No Display on the Screen

5. Troubleshooting
5.1 Troubleshooting for Acer A211H/A221HQ(1A1D1H):
5.1.1 No display on the screen (Screen is black and colour of LED is amber):
Does OSM display when you
push “MENU key.
Yes No
Proceed "No OSM display"
section.
Check if the sync signal from
computer is output and if the
video cable is connected
normally.
OK
Proceed "checking the resolution
change IC movement" section.
NG
Input the sync signal of computer,
or change the cable.
When a signal isn't being
inputted, it is indicated with "No
Signal Input". it is indicated with
"Out Of Range" at the time of the
frequency that it can't be
distinguished.
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ACER A211H/A221HQ