Sony KDL-26EX550 Service Manual ▷ View online
TROUBLE SHOOTING
3-5. POWER (Green) LED BLINKING
Non-Stop blinking
POWER (Green) blinking
Check
the impedance between
TCON VCC (CN6401#19)
G* Board
>= 200 Ohm
TCON_VCC (CN6401#19)
and GND (CN6401#12)
< 200 Ohm
T-con
(Panel module)
Remove the LVDS FFC.
And recheck the impedance.
200 Oh
>= 200 Ohm
B* Board
< 200 Ohm
(*)
Size
B* Board Type
G* Board Type
26”
BACS GL3
32
BAPS
GL2
41
KDL-26EX550 / 32EX550, 650, 653
32
BAPS
GL2
TROUBLE SHOOTING
3-6. NO PICTURE
No Picture
Press HOME key.
Menu displayed?
NO
Replace
the LVDS FFC
Panel
(Tcon)
NG
Check
BL_ON and BLINKING
at CN6401#5 & 4
Both H
YES
on the G* Board
Not both H
Symptom
improvement
B* Board
FFC
(LVDS)
Replace the harness
between G* board
and B* board)
Harness
（
G* to B*)
NG
OK
Change B* Board
G* board
NG
B* board
Symptom
improvement
(*)
Size
B* Board Type
G* Board Type
26”
BACS GL3
32
BAPS
GL2
42
KDL-26EX550 / 32EX550, 650, 653
32
BAPS
GL2
TROUBLE SHOOTING
3-7. NO SOUND
No Sound
Check the
“Speakers setting”
Change to
“TV Speaker”
“Audio System”
“TV Speakers”
Symptom
Check the Speaker
Harness
Replace
the B* Board
B* Board
NG
Symptom
improvement
S
Speaker Harness
Speaker
NG
Symptom
improvement
(*)
Size
B* Board Type
G* Board Type
26”
BACS GL3
32
BAPS
GL2
43
KDL-26EX550 / 32EX550, 650, 653
32
BAPS
GL2
TROUBLE SHOOTING
3-8. TV COMMANDER BUTTONS MALFUNCTION
1) TV button malfunction
Button malfunction
on the TV
Replace the Harness
between B* to
Switch Unit
Switch Unit change
NG
Symptom
improvement
between B to
Switch Unit
Switch Unit
Switch Unit change
NG
Symptom
improvement
Harness
B* Board
(*)
Size
B* Board Type
G* Board Type
26”
BACS GL3
32
BAPS
GL2
44
KDL-26EX550 / 32EX550, 650, 653
32
BAPS
GL2
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