Sony KDL-26EX550 Service Manual ▷ View online
SEC 3. TROUBLE SHOOTING
3-1. TRIAGE CHART
Note: Main board and Power board is different in name every inch. Therefore this section displays difference point in "*".
Green LED
Blinking
No
Power
Remote Network
Audio
Skype
R f
Video - missing or distorted
Symptoms - Shutdown. Power LED
blinking red diagnostics sequences
2
3
4
5
6
7
8
10
Green LED
non-stop
Blinking
No Green
Power LED
(Dead Set)
Stationary
colored lines
or dots
No video
one of Inputs
No video
all Inputs
No
Rem ote
Wireless
can't
connect
No Audio
Skype
Can't Work
B* BOARD
G* BOARD
HL BOARD
G* BOARD
HL BOARD
Reference
SPEAKER
Skype MODULE
LVDS CABLE
T-CON
LCD PANEL
Skype MODULE
LVDS CABLE
T-CON
LCD PANEL
Problem
POWER
POWER
POWER
PANEL
PANEL
TEMP
Software EMITTER
Problem
POWER AUDIO POWER
(TCON)
(INVERTER)
TEMP
Software EMITTER
: doubtful part
: Few possibility
: Few possibility
Size
B* Board Type
G* Board Type
26”
BACS GL3
32
BAPS
GL2
(*)
33
32
BAPS
GL2
KDL-26EX550 / 32EX550, 650, 653
TROUBLE SHOOTING
3-2. FLOW CHART
START
Does the Power Led
stay on when the
TV is switched on ?
See
No Power
Is the network
connection OK?
See
Network malfanction
No
No
TV is switched on ?
Is the Standby Led
blink ?
See
Standby LED Blink
Yes
Yes
Yes
See
Skype malfunction
No
Is the Skype
function OK?
b
?
END
Sta dby
No
Is the Power Led
blink ?
See
Power LED Blink
Yes
yp
Yes
Is the Picture and
S
d OK ?
See
N Pi t
/ N S
d
No
blink ?
Power LED Blink
No
Sound OK ?
No Picture / No Sound
Do the buttons
on the TV & Remote
See
No
No
Yes
on the TV & Remote
Commander work
properly?
TV/ Commander
button malfunction
Yes
KDL-26EX550
34
TROUBLE SHOOTING
3-3. NO POWER
No power
Long AC off
Power protection or
OK
g
(> 15 min.).
p
CPU abnormal stop
NG
Check STBY_+3.3V
at 10 pin of CN6001
on the B* board
G* board
Replace the harness
between G* board and
B* board
NG
NG
OK
Symptom
improvement
Harness
B* board
(*)
Size
B* Board Type
G* Board Type
26”
BACS GL3
32
BAPS
GL2
35
KDL-26EX550 / 32EX550, 650, 653
32
BAPS
GL2
TROUBLE SHOOTING
1) 2 times blinking (Main Power Error)
3-4. STANDBY LED BLINK
2 times blinkingg
Check REG+12V at
pins 3/5 of
CN6001 on
the B* Board
G* Board
Replace
Between G* Board to
B* Board Harness
12V NG
NG
12V OK
Symptom
improvement
B* Board
Harness
(*)
Size
B* Board Type
G* Board Type
26”
BACS GL3
32
BAPS
GL2
36
KDL-26EX550 / 32EX550, 650, 653
32
BAPS
GL2
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