KDL-32BX353, KDL-32BX354, KDL-40BX453, KDL-46BX453 - Sony TV Service Manual (repair manual). Page 19

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KDL-32BX353/32BX354/40BX453/46BX453 11
SECTION 3 - FLOW CHARTS AND DIAGRAMS
*For Part Number information, refer to 
“Section 4 - Disassembly/Part Number Information” on page 15
.
No Power
Is standby LED 
blinking?
No
Yes
No
See 
Protection Shutdown 
flowchart
Yes
Does red standby 
LED on front panel 
light?
Press power 
button while 
monitoring pin 3 of 
CN6401 on power 
supply board
High (3.3V)
on pin 3?
Yes
No
Main Board*
Power Supply 
Board*
High (3.3V)
on pin 2?
Yes
No
Power Supply 
Board*
Power Supply 
Board*
NO POWER FLOWCHART
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