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KDL-40HX850, KDL-40HX853, KDL-40HX855, KDL-46HX850, KDL-46HX853, KDL-46HX855, KDL-55HX850, KDL-55HX853, KDL-55HX855 (serv.man2) - Sony TV Service Manual (repair manual). Page 120

Read Sony KDL-40HX850 / KDL-40HX853 / KDL-40HX855 / KDL-46HX850 / KDL-46HX853 / KDL-46HX855 / KDL-55HX850 / KDL-55HX853 / KDL-55HX855 (serv.man2) Service Manual online

KDL-40/46/55HX850,853,855(AEP/UK/IT)
120
TROUBLE SHOOTING
3-6. NO PICTURE
No Picture
Press HOME Key.
Menu displayed?
B* board
NO
YES
Replace
B*-Tcon FFC,
Tcon-LD FFC
B-Tcon, Tcon-LD
FFC
NG
B* board
Check the G*- LD
Harness
Harness
NG
Change B* board
OK
NG
G* Board
Panel
(Tcon, LD)
Change G* board
NG
Symptom 
improvement
Symptom 
improvement
Symptom 
improvement
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