KDL-60EX640, KDL-60EX645 - Sony TV Service Manual (repair manual). Page 19

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KDL-60EX640/60EX645 11
SECTION 3 - FLOW CHARTS AND DIAGRAMS
No Power
Is standby LED 
blinking?
No
Yes
No
See protection 
flowchart
Yes
Does red standby 
LED on front panel 
light?
High (>2.5V)
on pin 2 of CN2 on 
power supply?
Yes
No
Main Board*
Press power 
button while 
monitoring pin 1 
of CN2 on power 
supply board
High (3.3V)
appears 
momentarily?
Yes
No
Power Supply Board
Power Supply Board
Power Supply Board
Remove AC power and 
wait at least 30 
seconds before re-
applying
NO POWER FLOWCHART
*For Part Number information, refer to 
“Section 4 - Disassembly/Part Number Information” on page 15
.
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