Sony KD-49X7 D Series Service Manual page 95

4.0 NO PICTURE
No Picture
Check Smart Core
Got Any Normal
No
Display?
Yes
Check Other
Portion:
Ext. Video Input -
No Picture
HDMI - No Picture
Tuner - No Picture
BL_ON (L or H):
Behavior
No
on the main board
(5x Blinking)
Yes
5x Blinking
Backlight
IC401 #18pin (for 4K BFM/BM2 board)
BL_ON：H
Replace
Check
the V by One FFC
BL_ON
Harness
BL_ON：L
V by One FFC
Harness
NG
Replace
the main Board
Symptom
Symptom
improvement improvement
Main board NG
NG
LCD Panel
(T-CON)
95