LG LAN-8680MH Service Manual page 78

❏ FRONT PART
• LCD SCREEN (1)
LCD SCREEN DEAD.
(PN801(PIN 3,4,19 )).
PN801(5,7PIN : HIGH).
(PINS 1,2,3 OF PN806).
FPC CABLE SHORT OR
SOLDER BADNESS OF LEAD
CHANGE LCD MODULE.
POWER ON TO
LCD_8V & BL_8V?
YES
DIM ON SIGNAL IS
OUTPUT?
YES
RGB IS OUTPUT?
YES
REMAIN?(PN801,
PN805,PN806).
YES
NO
CHECK POWER ICs OF
AUDIO BOARD
(IC902,IC903,IC904).
NO
CHECK THE SOLDER
BADNESS OF LEAD ON
IC803 , PN805,PN806.
NO
CHANGE MAIN PCB.
NO
CHECK THE SOLDER
BADNESS OF LEAD AND
FPC CABLE SHORT.
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