Sony KDL-55W950B / KDL-55W955B / KDL-55W957B / KDL-65W950B / KDL-65W955B Service Manual ▷ View online
RB2G
CHASSIS
W950B/ W955B/ W957B/ M25B
Board /Parts
Board PWB (BAX – B SIDE)
BAX
BACKLIGHT_MON =
JL9106
BACKLIGHT_MON =
JL9106
17
Troubleshooting
3-2-3. LED BLINKING 4x (LED Voltage Error)
4-times blinking
Check
BACKLIGHT_MON
on the BAX
Board
BAX Board
LED driver
Between 0.49V to 1.32V
For HT, HM, change LD board.
For HE, change Panel.
For HE, change Panel.
BACKLIGHT_
MON = JL9106
MON = JL9106
RB2G
CHASSIS
W950B/ W955B/ W957B/ M25B
18
Troubleshooting
3-2-3. LED BLINKING 5x (T-Con Error)
5-times blinking
Check
PANEL_VCC 12.5V at
CN8001 on
on the B* Board
G* Board/Adaptor
Replace the Harness
Between G* /LD board
and B* board
Replace
the LVDS Harness
Change
B* Board
Change
Panel (T-con)
Harness
LVDS Harness
B*Board
About 12.5V
NG
OK
NG
Symptom
improvement
Symptom
improvement
Symptom
improvement
NG
NG
Confirm Tcon12V.
BAX (B-Side
)
JL9137
(PANEL_VCC)
Size B* Board G* Board
55”
BAX
G1A
65”
BAX
G2A
RB2G
CHASSIS
W950B/ W955B/ W957B/ M25B
Parts
Board PWB (BAX- B side)
(JL9106)
19
Troubleshooting
3-2-4. LED BLINKING 6x (Backlight Error)
6-times blinking
Check JL9106* at
(BACKLIGHT_MON)
of CN9101
on the B* Board
B* Board
No
Change
G* board
1.3 -1.8 V
Symptom
improvement
Have G board?
Change LD Board
G* Board
Yes
LD Board
Symptom
improvement
Size B* Board G* Board
55”
BAX
G1A
65”
BAX
G2A
JL9106
RB2G
CHASSIS
W950B/ W955B/ W957B/ M25B
20
Troubleshooting
3-2-5. LED BLINKING 7x (Temperature Error)
7-times blinking
BAX Board
Yes
Panel
NG
Change BAX Board,
and Aging a few
hours
Setting
circumstance is OK?
Temperature,
Ventilation, etc.
Set to another
location, etc.
No
Symptom
improvement
improvement
No Sound
Change the
Speaker
Harness
Harness
Speaker
Harness
Replace
the BAX Board
Speaker
NG
NG
Check the
“Speakers
“Speakers
setting”
Change to
“TV Speaker”
“Audio System”
“TV Speakers”
Symptom
improvement
improvement
Symptom
improvement
improvement
No Sound:
Audio
Audio
No Sound:
Tuner
Tuner
No Sound:
HDMI
HDMI
BAX Board
3-3. No Sound
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