Sony KDL-32EX729 Service Training Manual page 49

SECTION 5 - FLOW CHARTS AND DIAGRAMS
Distorted Video
Video Missing or
Distorted on All
Skew (or Rock) the LVDS
connector from its socket
KDL-32EX729/40EX729/46EX729
Missing or
Is
Check external Device
No and Connections
Swap Devices and
connections
inputs?
Yes
Is
Distorted
Video Missing
or Distorted?
Missing
Can
Yes replace
user Menu be
Main Board
Displayed?
No
at the TCON Brd.
Are flashes
replace
Yes
of color
Main Board
displayed?
No
replace
TCON Board
Figure 5-5. MiSSiNg Or DiSTOrTeD ViDeO FLOWCHArT
Is
Yes
External Device
& connection
OK?
No
repair external
Device
Is
Distortion
No
Present in
user Menu
OSD?
Yes
Sharp Horizontal
Is
or Vertical Lines
Single Pixels
No
or Complete Line
of Pixels
missing?
Yes
Perform WIDE Mode Test
replace
LCD Panel
replace
Main Board
replace
Main Board
Ng replace
Check LVDS cable
for Physical Damage LVDS Cable
Cable OK
Does
Distortion follow
Yes replace
picture size
Main Board
when changing
WIDE mode?
No
replace
TCON Board
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