Sony KDL-55W805A Service Manual ▷ View online
KDL-55W805A 9
SECTION 2 - TROUBLESHOOTING
*For Part Number information, refer to
“Section 4 - Exploded View/Part Number Information” on page 19
.
STANDBY LED BLINKING FLOWCHART
Protect
Shutdown.
Standby LED
Blinking
No
Yes
Power Supply
Board*
No
Yes
2X
Main Board*
3X
4X
No
Yes
5X
Yes
6X
No
7X
Imediately
LCD Panel*
TCON*
(LCD Panel)
Yes
No
After a while
Check ventilation
10X
HEM3 Board
8X
See Triage Chart
Main Board*
Power Supply
Board*
KDL-55W805A 10
SECTION 2 - TROUBLESHOOTING
*For Part Number information, refer to
“Section 4 - Exploded View/Part Number Information” on page 19
.
NO VIDEO FLOWCHART
No Video
Backlights
turned on?
Sony logo
appears
momentarily?
No
Main Board*
No
Yes
Yes
LCD Panel*
Locate
CN6401 on
Power
Supply Board.
Zero volts at
Pin 2?
TCON*
(LCD Panel)
Yes
No
Zero volts at
Pin 5?
Yes
Main Board*
No
LCD Panel*
KDL-55W805A 11
SECTION 2 - TROUBLESHOOTING
*For Part Number information, refer to
“Section 4 - Exploded View/Part Number Information” on page 19
.
VIDEO DISTORTION FLOWCHART
Video Distortion
Is distortion
across entire
screen?
Any horizontal
lines?
No
No
Yes
Yes
Improper or
missing colors?
Yes
Main Board*
No
Vertical lines
or bars?
No
Yes
Lines
move when
wide-mode
changed?
Yes
No
TCON*
(LCD Panel)
Main Board*
LCD Panel*
Any single or
isolated vertical
lines?
Yes
LCD Panel*
More than 1
vertical band?
No
Yes
TCON*
(LCD Panel)
KDL-55W805A 12
SECTION 2 - TROUBLESHOOTING
NO 3D VIEWING
Double images
displayed on
screen?
Yes
Main Board*
No
Press “3D” button on
Remote Commander
and select
“Simulated 3D”.
Passive 3D
Glasses
View image with
Passive 3D
Glasses.
Double images
become one?
Yes
3D OK
No
3D Not Working
*For Part Number information, refer to
“Section 4 - Exploded View/Part Number Information” on page 19
.
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