Sony KDL-40HX700 / KDL-40HX701 / KDL-40HX703 / KDL-40HX705 / KDL-46HX700 / KDL-46HX703 / KDL-46HX705 Service Manual ▷ View online
KDL-40/46HX700 Series(AEP/UK)
21
SEC 3. TROUBLE SHOOTING
3-1. TRIAGE CHART
Note: Power board is different in name every inch. Therefore this section displays difference point in "*".
No
Power
Remote
Network
Audio
2
3
4
5
6
7
No Green
Power LED
(Dead Set)
Stationary
colored lines
or dots
No video
one of Inputs
No video
all Inputs
No
Remote
Wireless
can't
connect
No Audio
BAL BOARD
G* BOARD
HLR BOARD
WiFi MODULE
D1 BOARD
LVDS CABLE
LCD PANEL
Problem
POWER
POWER
DTT
AUDIO
POWER
PANEL
(TCON)
PANEL
(INVERTER)
TEMP
: doubtful part
: Few possibility
Reference
Symptoms - Shutdown. Power LED
blinking red diagnostics sequences
Video - missing or distorted
KDL-40/46HX700 Series(AEP/UK)
22
TROUBLE SHOOTING
3-2. FLOW CHART
START
Does the Power Led
stay on when the
TV is switched on ?
Is the Standby Led
blink ?
Is the Picture and
Sound OK ?
Do the buttons
on the TV & Remote
Commander work
properly?
END
See
No Power
No Power
See
Standby LED Blink
Standby LED Blink
See
No Picture / No Sound
No Picture / No Sound
See
TV/ Commander
button malfunction
TV/ Commander
button malfunction
Is the network
connection OK?
See
Can’t connect network
Can’t connect network
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
KDL-40/46HX700 Series(AEP/UK)
23
TROUBLE SHOOTING
3-3. NO POWER
No Power
Check STBY 3.3V
at 1 pin of CN3800
on the BAL Board
Harness
G* Board
Replace
Between G* Board to
BAL Board Harness
BAL Board
NG
OK
NG
OK
Turn on the Switch
Check
Power Saving Switch
SW OFF
SW ON
KDL-40/46HX700 Series(AEP/UK)
24
1) 2 times blinkings (Main Power Error)
TROUBLE SHOOTING
3-4. STANDBY LED BLINK
2 times Blinkings
Check REG12V at
pins 6/7 of
CN3800 on
the BAL Board
BAL Board
Harness
G* Board
Replace
Between G* Board to
BAL Board Harness
12V NG
12V OK
NG
OK
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