Read Sony KDL-46W705A / KDL-50W705A Service Manual online
KDL-46W705A/50W705A 10
SECTION 2 - TROUBLESHOOTING
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
CN2 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*
*For Part Number information, refer to
“Section 4 - Exploded View/Part Number Information” on page 18
.
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