Read Sony XBR-43X830C / XBR-49X830C / XBR-49X835C / XBR-49X837C / XBR-49X839C Service Manual online
XBR-43X830C, 49X830C, 835C, 837C, 839C
104
TROUBLE SHOOTING
3-5. NO PICUTURE
No Picture
Got Any Normal
Display?
No
Yes
Check Smart Core
Behavior
(5x Blinking)
5x Blinking
Check Other
Portion:
Tuner - No Picture
HDMI - No Picture
Ext. Video Input -
No Picture
Yes
Replace
the V by One FFC
Harness
LCD Panel
(T-CON)
V by One FFC
Harness
NG
Check
BL_ON
on the main board
BL_ON：H
BL_ON：L
Symptom
improvement
BL_ON (L or H): IC9017 #18pin (for 4K BMFW/BMFL board)
Replace
the main Board
NG
Main board NG
Symptom
improvement
No
Backlight
Click on the first or last page to see other XBR-43X830C / XBR-49X830C / XBR-49X835C / XBR-49X837C / XBR-49X839C service manuals if exist.