Display Trouble (White Screen) - Daewoo LX32L1 Series Service Manual

Hardware Trouble shooting

5-3) Display Trouble (white screen)

Is there voltage on grid of
Q8/3407 can changed
(12 0V or 5V~0)
Y
CN4 is ill-connected
(is there voltage for panel)
or Q8 is damaged
Check if the I/O of U12 is damaged
(the 132th pin)
All manuals and user guides at all-guides.com
White screen
Check if the voltage of panel power
supply is normal (depend on panel) supply is normal (depend on panel)
N
N
Check if the circuit of Q9 normal?
Y Y
Change the LCD panel
or the cable to panel
N N
Q9 is damaged
-9-
Y
Is there output signal
from U12
N
Y
U12 is illness