Read Sony KDL-65W850C / KDL-65W855C / KDL-65W857C / KDL-65W858C / KDL-65W859C / KDL-75W850C / KDL-75W855C Service Manual online
11
3-1. NO POWER
Output
Name
Output Voltage
Connector
CN6401
BL_ON
2.64V~3.3V
Pin 3
STBY3.3V
3.35V~3.55V
Pin 5
AC OFF DET
3.45V
Pin 7
BL_ERR
0V
Pin 8
Power_ON
2.64V~3.3V
Pin 9
REG12V
12.2V~13.2V
Pin 13Pin 18
Output
Name
Output Voltage
Connector
CN5801
+OUT1
173.6V~250.3V
Pin 1
+OUT2
173.6V~250.3V
Pin 2
NO POWER
Check Fuse F6101
& FB801S , for open
Check Stby
3.3V at Pin 5 of
Connector CN6401
Check Power ON
at Pin 9
Of connector CN6401
Check Reg12V at
Pin 13Pin 18 of
Connector CN6401
Replace PSU
Replace PSU
Main Board Problem
(B*)
Replace PSU
Yes
no
No Voltage
yes
No Voltage
yes
No Voltage
yes
Check BL_ON
at Pin 3 of
Connector
CN6401
yes
Main Board Problem
(B*)
No Voltage
Check +Out1
and +Out2 at
CN5801
yes
Replace PSU
No Voltage
PSU OK
SECTION 3
TROUBLESHOOTING
Troubleshooting
3-1-1 NO POWER (XMH-65)
Size B* Board G* Board H* Board
65”
BMX
GL1SB
HSC3_L
75”
BMX
GL1C
HSC3_L
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