Acer AT2058ML Service Manual page 40

3. Abnormal Display
Abnormal Display
Check the source
Yes
Enter factory mode to do
"EEPROM initial"&"Reset"
No
Check the main board
Yes
Check the LVDS cable
Yes
Check the panel
No
Replace the panel
40
No
Reset the source
No
Replace the main board
No
Replace the LVDS cable