No Picture: Te And Hg Model - Sony KDL-40W900A Service Manual

Troubleshooting
3-5.No Picture
3-5-17. NO PICTURE: (TE and HG Model)
No Picture
Is blue picture
on display?
(Factory SW
is booted)
・
YES
B-Board is OK.
Check: Ch k
Tuner - No Picture
HDMI - No Picture
Ext. Video Input -
No Picture
Set Board Set Board
to Panel-less
No
NO
condition and
replace LVDS FFC.
Is test pattern
displayed? displayed?
YES
LVDS FFC
Harness Harness
Broken
Check
Flash Data
NG
Rewrite Data
PANEL_VCC =12V
Ch Check k
CHECK BL_ON on
PANEL_VCC
OK
B-Board at JL9111.
from G Board at
JL9102 on
B-Board
NG
G-Board G-Board, B-Board
Or
Power Harness Power Harness
Check/Change
OK
NG
TCON
Mini-LVDS FFC
to Panel
OK
Mini LVDS FFC
broken broken
Size B* Board Type
OTHERS
Note:
40 40" BA2-S BA2-S
(AYU2) – IC9000 (AYU2) IC9000
(Brownie)- IC9001
46" BA2-S
55" BA2-S
Check GOLGO
OK
power
H: OK and harness
L: NG condition
NG
GOLGO Power
Or
Harness or FFC H
NG
Change T-CON
Panel problem
or GOLGO
OK
T-CON or GOLGO
NG NG
RB1G CHASSIS
W900A/904A/905A
G* Board
Type
JP
BA2-W BA2-W G1A G1A
BA2-W G1A
BA2-W G1B
OK
NG
FFC
199