Sony KDL-26EX550 Service Manual ▷ View online
TROUBLE SHOOTING
2) 3 times blinking (Main Board Error)
3 times blinking
Check AUDIO+12.5V
at pin 2/4 of
DC_ALERT
AUDIO
NG
Check D+1.2V at
JL6002
on the B* Board
F6001,IC6001,etc
(B* Board)
at pin 2/4 of
CN6001 on
the B* Board
G* Board
_
NG
OK
Check +3 3V MAIN
Check +12.5V
at F4601 on
the B* Board
F4601,IC4601,etc
(B* Board)
OK
NG
NG
Check +3.3V_MAIN
at JL6005 on
the B* Board
F6003,IC6003,etc
(B* Board)
OK
OK
Speaker
Check
Speaker Impedance
AUDIO
FE/BE Communication
NG
Other B* Board’s parts
(Audio, Tuner, HDMI Eq...)
Speaker
Speaker Impedance
at SP Connector
OK
(*)
Size
B* Board Type
G* Board Type
26”
BACS GL3
37
KDL-26EX550 / 32EX550, 650, 653
32
BAPS
GL2
TROUBLE SHOOTING
3) 5 times blinking (T-con Error)
5 time blinking
Check PANEL_VCC
at JL6001 on
on the B* Board
G* Board
Panel (T-con)
change
B* Board
NG
NG
on the B* Board
about 5V : 22” Model
about 12V : ex. 22” Model
OK
Symptom
improvement
S
Replace the Harness
Between G* and Panel
(Only 3a-G)
Harness
Panel (T-con)
Symptom
improvement
S
t
NG
Replace
the LVDS FFC
LVDS FFC
Symptom
improvement
(*)
Size
B* Board Type
G* Board Type
26”
BACS GL3
32
BAPS
GL2
38
NG
KDL-26EX550 / 32EX550, 650, 653
32
BAPS
GL2
TROUBLE SHOOTING
4) 6 times blinking (Backlight Error)
6 time blinking
Check
BACKLIGHT_MON
at JL6017
h B* b d
B* board
Under 2.65V
Check the connection
between G* board and
the light source
(i id h
l
d l )
NG
LS connection
on the B* board
Over 2.65V
(inside the panel module).
Light source
(Inside Panel module)
Check the harness
between G* board
and B* board.
G-B harness
NG
OK
G* board
Symptom
improvement
Change G* board
OK
NG
g
(*)
Size
B* Board Type
G* Board Type
26”
BACS GL3
32
BAPS
GL2
39
KDL-26EX550 / 32EX550, 650, 653
32
BAPS
GL2
TROUBLE SHOOTING
5) 7 times blinking (Temperature Error)
6) 8 times blinking (Software Error)
7 times blinking
8 times blinking
Setting circumstance
is OK?
Temperature,
Set to another
Location, etc.
NO
If the Symptom
Improved by changing
the WIFI module
B* Board
NO
Ventilation, etc.
YES
the WIFI module
Symptom
improvement
Change B* Board,
and Aging a few hours
Panel
WIFI Module
B* Board
OK
(*)
Size
B* Board Type
G* Board Type
26”
BACS GL3
32
BAPS
GL2
40
KDL-26EX550 / 32EX550, 650, 653
32
BAPS
GL2
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