Sony KD-43X7 F Series User Manual

3.1 No power - LD board
yes
yes
12V_TCON check
12V DDCON check
Check EN POWER_ON
R1003 voltage
Is voltage >2.5V?
Check Vcc
C1009 voltage
Is voltage >5.0V?
Check B-Board
Troubleshooting flow 1.2
IC1000 broken
Fuse F1000 broken
no
no
no
12V power OK
Check other troubleshooting flow
END
Check 12.5V_TCON
Is voltage > 12.0V?
no
yes
yes
Check TCON_ON
C1024
Is voltage > 3.0V?
yes
Main device failure
no
Check MOSFET
Q1006
Is > 1kohm?
yes
Q1006 broken
no
Check point on PWB refer next slide
START
Check fuse F1000
Is < 1ohm
≥ 12V
yes
Check Input to GND
Is > 1k ohm?
yes
DDC IC1000 broken
no
Check Input to Output
Is > 1k ohm?
yes
DDC IC1000 broken
no
Check Output to GND
Is > 1k ohm?
yes
DDC IC1000 broken
no
Check 12V
C1016 voltage
Is voltage <12V?
16
SYSSET
2018/05/0404:12:02(GMT+09:00)

Sony KD-43X7 F Series Specifications

General

Brand	Sony
Model	KD-43X7 F Series
Category	LCD TV
Language	English