Sony KD-43X7 G Series Service Manual page 16

1.1 : No power - LD board
START
no
1. Check fuse impedance
F1001 / F1002
Is < 1ohm?
yes
2. Check impedance no
D1001 to GND
Is > 1kohm?
yes
no
3. Check MOSFET
Q1007
Is > 1kohm?
yes
no
4. Check MOSFET
Q1002
Is > 1kohm?
yes
no
5. Check MOSFET
Q1008
Is > 1kohm?
yes
Check B board
Fuse F1001 broken
Diode D1001 broken
MOSFET Q1007 Broken
MOSFET Q1002 Broken
MOSFET Q1008 Broken
LD board
2
Q1007
3
4
1
5
16
SYS SET