No Power; No Power (Xmh-65) - Sony KDL-65W850C Service Manual

3-2. NO POWER

3-2-1. NO Power (XMH-65)

NO POWER
Check Fuse F6101
& FB801S , for open
Yes
No
Check Stby
No Voltage
3.3V at Pin 5 of
Connector CN6401
Yes
No Voltage
Check Power ON
at Pin 9
Of connector CN6401
Yes
Check Reg12V at No Voltage
Pin 13Pin 18 of
Connector CN6401
Yes
KDL-65W850C, 855C, 857C, 75W850C, 855C
Replace PSU
Replace PSU
Main Board Problem
(B*)
Replace PSU
Check BL_ON
No Voltage
at Pin 3 of
Connector
CN6401
Yes
Check +Out1
No Voltage
and +Out2 at
CN5801
Yes
Output
Name
PSU OK
BL_ON
STBY3.3V
AC OFF
DET
BL_ERR
Power_ON
REG12V
Output
Name
+OUT1
+OUT2
TROUBLE SHOOTING
Size B* Board G* Board
65"
BMX GL1SB
75"
BMX GL1C
Main Board Problem
(B*)
Replace PSU
Connector
Output Voltage
CN6401
2.64V~3.3V Pin 3
3.35V~3.55V Pin 5
3.45V Pin 7
0V Pin 8
2.64V~3.3V Pin 9
12.2V~13.2V Pin 13Pin 18
Connector
Output Voltage
CN5801
173.6V~250.3V Pin 1
173.6V~250.3V Pin 2
32