Read Sony KD-55X8500A (serv.man2) Service Manual online
KD-55X8500A/65X8500A(CH)
114
TROUBLE SHOOTING
Backlight Issue
No Picture
All blue picture is on?
(Factory SW is booted.)
B* Board
No
Yes
Replace
the B-Tcon, B-LD*
FFC
B-Tcon, B-LD*
FFC
NG
B* Board
Check the G*- LD*
Harness
Harness
NG
Change B* Board
OK
NG
G* Board
LCD Panel
(T-con, LD*)
Change G* Board
NG
Symptom
improvement
Symptom
improvement
Symptom
improvement
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