Acer AT2058ML - Page 41

41
4. No display
Check the B/L
signal is available?
Replace main board
Replace the converter board
Panel Vcc = 5V?
Replace the Panel
No display (LED blue)
Replace the main board
Check the backlight is
“On”?
Check the LVDS cable
Reinsert or replace the
LVDS cable
Replace the main board
Replace the Panel
No
Yes
Yes
No
Yes
No
No
Yes
Yes
No
Yes
No
Converter board output＝48.8 V/44.8V？
Check TV is under control and power
on/off by remote control and power key?