DOWNLOAD Sony KDL-46HX820 / KDL-55HX820 (serv.man4) Service Manual ↓ Size: 16.91 MB | Pages: 96 in PDF or view online for FREE

Model
KDL-46HX820 KDL-55HX820 (serv.man4)
Pages
96
Size
16.91 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kdl-46hx820-kdl-55hx820-sm4.pdf
Date
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Sony KDL-46HX820 / KDL-55HX820 (serv.man4) Service Manual ▷ View online

KDL-46/55HX820(CH)
65
TROUBLE SHOOTING
3-3. NO POWER
No Power
Check STBY 3.3V
at 10 pin of CN6001
on the B* Board
Harness
G* Board
Replace
Between G* Board to
B* Board Harness
B* Board
NG
OK
NG
OK
Turn on the Switch
Check
Power Saving Switch
SW OFF
SW ON
KDL-46/55HX820(CH)
66
1) 2 times blinking (Main Power Error)
TROUBLE SHOOTING
3-4. STANDBY LED BLINK
2 times blinking
Check REG12V at
pins 2/3 of
CN6001 on
the B* Board
B* Board
Harness
G* Board
Replace
Between G* Board to
B* Board Harness
12V NG
12V OK
NG
OK
KDL-46/55HX820(CH)
67
TROUBLE SHOOTING
2) 3 times blinking (DC Alert, Audio Error and Communication Error)
3 times blinking
Check D+1.2V at
JL6007
on the B* Board
F6001,IC6005,etc
(B* Board)
Speaker
Check +3.3V_MAIN
at JL9234 on
the B* Board
Check
Speaker Impedance
at SP Connector
F6003,IC6003,etc
(B* Board)
Check AUDIO+12.5V
at pin 8/9 of
CN6001 on
the B* Board
G* Board
Check +12.5V
at F4601 on
the B* Board
F4601,IC4601,etc
(B* Board)
IC4601,etc
(B* Board)
DC_ALERT
NG
OK
AUDIO
AUDIO
FE/BE Communication
NG
OK
NG
OK
NG
OK
NG
OK
KDL-46/55HX820(CH)
68
TROUBLE SHOOTING
3) 4 times blinking (Balancer Error)
4-time blinking
Check
PANEL_FAIL at
JL6017
on the B* Board
Panel
B* Board
Between 0.84V to 2.65V
Change G* Board
G* Board
Below 0.84V
Symptom 
improvement
NG
Change LED Driver Board
LED Driver Board
Symptom 
improvement
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