Sony KDL-46HX820 Service Training Manual page 51

SECTION 5 - FLOW CHARTS AND DIAGRAMS
Video Distortion
Is distortion
across entire
Any horizontal
Any single or
isolated vertical
More than 1
vertical band?
KDL-46HX820/55HX820
Yes Improper or
missing colors?
screen?
No Yes
Main Board
Yes
LCD Panel
lines?
No
Yes
LCD Panel
lines?
No
Yes
TCON
(LCD Panel)
FIGURE 5-6. VIDEO DISTORTION
No
Vertical lines Yes move when
or bars? wide-mode
No
(LCD Panel)
Lines
Yes
Main Board
changed?
No
TCON
45