LG UltraFine 24MD4KL Service Manual page 10

2. No Display
Ch eck th e Panel Backlight
Y
Ch eck th e Voltage L903 : 10V
Y
Ch eck th e e DP Aux signal of Panel
P 501(#17,18)
Y
Ch eck th e FFC Cable
Y
Ch ange th e Panel or T -Con board
N
Ch eck th e Signal "W LED_ENABLE"
is High
Y
Ch eck th e Output of LED Dr iver
(P 901 #1~#5)
N
Ch ange th e IC900
Ch eck th e Solder status of IC500
N
An d change the M ain Board
N
Ch ange th e FFC Cable
- 10 -
N
Ch ange IC501
N
Ch ange th e LED Sub Board
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