KDL-65W850A, KDL-65W855A - Sony TV Service Manual (repair manual). Page 12

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RB1G
CHASSIS
W850/855A
Self Diagnostic Function
2-5. Triage Chart
No
Power
Remote
Network
Audio
Skype
Smart Core
Bluetooth (BT)
Stationary
Symptoms - Shutdown. Power LED
blinking red diagnostics sequences
Video
 - missing or distorted
Reference 
2
3
4
5
6
7
8
10
No White Power LED  
& does not reponse to 
remote (Dead Set)
Stationary 
colored 
lines or 
dots      
No video One 
of Inputs
No video all 
Inputs
No Remote
Wireless
can't connect
No Audio
Skype 
Can't Work
Smart Core no  LED (Set is 
still alive)
Bluetooth / One 
Step Remote (OSR) 
can't connect
B* Board
















G* Board










H* Board (IR)
 



H* Board (SC)




K Board
▲



※Add for CM/MH
▲



Speaker


Skype Module

f
Wifi Module



BT Module

LD* Board


LVDS FFC




LVDS FFC




Tcon






LCD Panel






Panel
Panel
Soft-
Note: Details refer to Troubleshooting Section.
Most likely defective part
(*)
Size
B* Board Type G* Board Type
Power Power
LD
(Tcon)
(Backlight)
TEMP
ware
Emitter
Audio
FAN
(N/A)
Local
I2C
 Problem
12
Secondary possible defective part
Most likely defective part
65”
BA2SC G6&G7B

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