Read Sony KDL-55W950B / KDL-55W955B / KDL-55W957B / KDL-65W950B / KDL-65W955B Service Manual online
RB2G
CHASSIS
W950B/ W955B/ W957B/ M25B
Parts
Location/Parts
Detail
(1)
(JL9137
(PANEL_VCC)
(2)
JL9105
(BL_ON)
22
Troubleshooting
3-4-2. NO PICTURE: (All Model)
<BAX- B SIDE>
1
2
Size B* Board G* Board
55”
BAX
G1A
65”
BAX
G2A
No Picture
Is blue picture
on display?
(Factory SW
is booted)
No
Yes
Replace
the LVDS FFC
Harness
LCD Panel
(T-CON)
LVDS FFC
Harness
NG
Check
BL_ON at JIG LAND
on the B* Board
BL_ON：H
B-Board NG
Replace Harness
between G-Board/
LD-Board
to B-Board
Replace G-Board/LD-Board
to B-Board Harness
NG
BL_ON：L
Change B-Board
Change G-Board
/ LD board
NG
Check
PANEL_VCC
at JIG LAND
on the B* Board
No
G-Board or
Adaptor NG
Yes
PANEL_VCC = +12V
HS,HT(BAX): JL9137
Symptom
improvement
improvement
Symptom
improvement
Symptom
improvement
improvement
・
B-Board is OK.
Check:
Tuner –
No Picture
HDMI –
No Picture
Ext. Video Input –
No Picture
BL_ON (L or H): JL9105
JL9137
(PANEL_
VCC)
JL9105
(BL_ON)
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