Hyundai H-PDP4201 Service Manual page 45

three、The red led light，but turn to other color after power on and black display
change switch
find if there is
icon on the
screen
No
check mainboard
J15；check the
line
No
check LVDS
signal
Yes
check PW113
sync、pixel
clock、RGB data
sinal
Yes
check crystal
frequent；check
PW113；change
follow no
Yes
picture to check
Yes mend
1、LVDS ON is
hign or not
2、check PW113
No No output port ；
sync、pixel
change PW113
clock、RGB data
sinal
Yes
checkDS90c383
No
power supply
Yes
check DS90C383，
change
45
check PW113
check power
supply