No Power Flowchart - Sony KDL-40R450A Repair Manual

NO POWER FLOWCHART

AC power. Wait at
least 20 seconds
Does red standby
LED on front panel
Power Supply Board
KDL-40R450A/46R450A
No Power
Unplug TV from
and re-apply AC
power
Yes
monitoring pin 4 of
CN6401 on power
light steady?
No
Yes
Is standby LED See protection
blinking?
No
SECTION 2 - TROUBLESHOOTING
Press power
button while
High (3.3V)
on pin 4?
supply board
High (3.3V)
flowchart on CN6401 pin 6?
Power Supply Board
Yes
Power Supply Board
No
Yes
Main Board
No
8