DOWNLOAD Sony KDL-42W850A / KDL-47W850A / KDL-55W850A Service Manual ↓ Size: 53.63 MB | Pages: 127 in PDF or view online for FREE

Model
KDL-42W850A KDL-47W850A KDL-55W850A
Pages
127
Size
53.63 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kdl-42w850a-kdl-47w850a-kdl-55w850a.pdf
Date
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Sony KDL-42W850A / KDL-47W850A / KDL-55W850A Service Manual ▷ View online

RB1G
CHASSIS
W850A
Troubleshooting
3-2-5. LED Blinking 5x (T-Con Error) (HG and TE Model)
3-2-4. LED Blinking 4x (LED Voltage Error)
5-times blinking
Panel (T-con)
change
B* Board
NG
4-times blinking
Between 0 98V to 1 23V
Check PANEL_VCC
12.5V at pin 47-51 of
CN8001 on
on the B* Board
G-board  
Panel (T-con)
About 12.5V
NG
OK
Symptom 
improvement
Confirm Tcon 12V.
Check JL9112
(BACKLIGHT_MON) 
on the B* Board
LED driver
Between 0.98V to 1.23V
Replace the Harness 
Between G-board /  
Adapter (BK* only)
and 
Panel
Harness
Symptom 
improvement
B* Board
Replace
the LVDS Harness
LVDS Harness
Symptom 
improvement
NG
NG
For  Ayu2(IC9000) replacement check related section
Note: 
(AYU2) – IC9000
(Brownie)- IC9001
(*)
Size
B* Board Type G* Board Type
42”
BA2-S GL2S
47”
BA2-S
GL2S
49
(Brownie) IC9001
55”
BA2-S
GL2E
RB1G
CHASSIS
W850A
Troubleshooting
Troubleshooting Reference 
BA2 board Side B
BA2 board Side B 
BACKLIGHT_MON = 
JL9112
LED Blinking 4x (LED Voltage Error)
50
RB1G
CHASSIS
W850A
Troubleshooting
Troubleshooting Reference 
BK* board Side B (Not applicable for this model)
BK   board Side B (Not applicable for this model)
LED Blinking 4x (LED Voltage Error)
BACKLIGHT_MON = 
JL8206
JL8206
51
RB1G
CHASSIS
W850A
Troubleshooting
Troubleshooting Reference 
BM board Side B (not applicable for this model)
BM board Side B (not applicable for this model)
BACKLIGHT MON =
LED Blinking 4x (LED Voltage Error)
BACKLIGHT_MON   
JL9112
52
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