KDL-70X830B 10
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 5?
TCON*
(LCD Panel)
Yes
No
Zero volts at
Pin 3?
Yes
Main Board*
No
LCD Panel*
*For Part Number information, refer to
“Section 4 - Exploded View/Part Number Information” on page 21
.