Acer VG272 - Using the Shortcut Menu

19
5.4 LED backlight debug flow：
LED driver Debug
Check Net
19V_BLD is
19V?
Replace BL1
BL1 is
open?
BD1 is damaged?
BU1 is damaged?
Replace BU1
Check U5 works
END
N
Y
Y
N
Y
N
Replace BD1
Backlight on?
Y
N
Open BR27
Y
N
Check BU2 pin5
is High
Check NET VB_CTRL
level is high?
Reassemble BR67
Y
N
Y
Y
N
Replace BU2