Read Sony XBR-55X800B Service Manual online
XBR-55X800B 8
SECTION 2 - TROUBLESHOOTING
NO POWER FLOWCHART
No Power
Is Standby LED
blinking?
No
Yes
No
See Stanby
LED Blinking
Flowchart
Yes
Does red
Standby LED on
front panel light?
High (>2.5V)
on pin 28 of CN6401
on Power Supply?
Yes
No
Main Board*
Press power button while
monitoring pin 27
of CN6401 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
reapplying.
*For Part Number information, refer to
“Section 4 - Exploded View/Part Number Information” on page 19
.
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