KDL-40NX720, KDL-40NX723, KDL-46NX720, KDL-46NX723, KDL-55NX720, KDL-55NX723, KDL-60NX720, KDL-60NX723 - Sony TV Service Manual (repair manual). Page 12

Read Sony KDL-40NX720 / KDL-40NX723 / KDL-46NX720 / KDL-46NX723 / KDL-55NX720 / KDL-55NX723 / KDL-60NX720 / KDL-60NX723 Service Manual online

SECTION 3
TROUBLESHOOTING
KDL- 40, 46, 55, 60 NX720
RM-GD019
KDL- 40, 46, 55, 60 NX723
RM-GD019
Troubleshooting
3-1. Power Problem
3-2. Standby Led Blinking
3-2-1.   2-times blinking (Main Power Error)
No Power
Turn on the Switch
Check
SW OFF
2-times blinking
Check STBY 3.3V
Replace the Harness
Turn on the Switch
* Power Saving Switch
NG
NG
SW ON
Check REG12V  
at  pins 2/3 of
CN6001 on
the B* Board
G* Board
Replace the Harness
Between G* Board and
B* Board
NO 12V
NG
at 10 pin of CN6001
on the B* Board
G* Board
Between G* Board and
B* Board
NG
OK
Symptom 
improvement
the B* Board
B* Board
Harness
12V OK
Symptom 
improvement
Harness
B* Board
Power Saving Switch:Only for BAT-L model
(2b-1,2b-2,3a-1)
Segment
Size
B* Board 
Type
G* Board 
Type
3a-1
40
BAT-L
G4BW
3a-1
46
BAT-L
G5AW
-11-
3a-1
55
BAT-L
G6AW
3a-1
60
BAT-L
G6AW
Page of 74
Display

Click on the first or last page to see other KDL-40NX720 / KDL-40NX723 / KDL-46NX720 / KDL-46NX723 / KDL-55NX720 / KDL-55NX723 / KDL-60NX720 / KDL-60NX723 service manuals if exist.