Read Sony KDL-43W950C / KDL-50FA95C / KDL-50FA97C / KDL-50W950C Service Manual online
11
3-1. NO POWER
SECTION 3
TROUBLESHOOTING
Troubleshooting
3-1-1 No Power – LD Board
No Power
Check Fuse
F1000
B* Board
OK
NG: DC Voltage is 0V
DC/DC converter check
NO POWER: MUFFIN
Check 19.5V_SS
JL1000
MOSFET Q1003
broken
NG: DC Voltage is 0V
Check connection
harness
CN4001
OK
OK
Symptoms
Symptoms
Check DIODE
D1001
DIODE D1001
broken
NG: Diode are shorted
FUSE F1000
broken
OK
Check Fuse
12V DDCON
F9104
OK
FUSE F9104
broken
NG: DC Voltage is 0V
Size
B* Board
G* Board
H* Board
43”
BMX
Not applicable
HSC3
50”
BMX
Not applicable
HSC3
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