LG UltraFine 27MD5KL Service Manual page 10

2. No Display
Ch eck th e Panel Backlight
Y
Ch eck th e Voltage L1107 : 10V
Y
Ch eck th e e DP Aux signal of Panel
P 502(#36,37)
Y
Ch eck th e FFC Cable
Y
Ch ange th e Panel or T -Con board
N
Ch eck th e Signal "LED_ENABLE" is
High
Y
Ch eck th e Output of LED Dr iver
(P 800 #3)
N
Ch ange th e IC1100
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 IC800
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