Read Sony KDL-47W802A / KDL-55W802A Service Manual online
KDL-47W802A/55W802A 10
SECTION 2 - TROUBLESHOOTING
*For Part Number information, refer to
“Section 4 - Exploded View/Part Number Information” on page 20
.
NO VIDEO FLOWCHART
No Video
Backlights
turned on?
Unplug LVDS
connector with
unit off. Turn unit
back on.
Test patterns
display on
screen?
Yes
No
TCON
(LCD Panel)*
Sony logo
appears
momentarily?
No
Main Board*
No
Yes
Yes
Main Board*
Locate
CN6401 on
Power Supply
Board.
Zero volts at
Pin 2?
TCON
(LCD Panel)*
Yes
No
Zero volts at
Pin 4?
Yes
Main Board*
No
LCD Panel*
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