No Power Flowchart - Sony KDL-39R475A Repair Manual

NO POWER FLOWCHART

No Power
Unplug TV from
AC power. Wait at
least 20 seconds
and re-apply AC
Does red standby
LED on front panel
light steady?
Is standby LED
Power Supply
KDL-39R475A/42R474A/42R475A/46R475A
power.
Yes
No
See Standby
Yes
LED Blinking
blinking?
flowchart
No
Board
SECTION 2 - TROUBLESHOOTING
Press power
button while
High (3.3V)
monitoring pin 4 of
on pin 4?
CN9301 on Power
Supply Board.
High (3.3V)
on pin 1?
No
39"?
Power Supply
Board
Yes
Press power
button while
High (3.3V) on
monitoring pin 4 of
pin 4?
CN9101 on Power
Supply Board.
High (3.3V) on
pin 1?
Power Supply
Board
Yes
Power Supply
Board
No
Yes
Main Board
No
Yes
Power Supply
Board
No
Yes
Main Board
No
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