Sony XBR-55X850B / XBR-65X850B Service Manual ▷ View online
XBR-55X850B/65X850B 9
SECTION 2 - TROUBLESHOOTING
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/
LD Board*
TCON
(LCD Panel)*
Yes
No
After a while
Check ventilation
10X
HEM3 Board
8X
See Triage Chart
10X
HEM3 Board
9X
Tuner Board*
Main Board*
Power Supply
Board*
*For Part Number information, refer to
“Section 4 - Exploded View/Part Number Information” on page 21
.
XBR-55X850B/65X850B 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
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
.
XBR-55X850B/65X850B 11
SECTION 2 - TROUBLESHOOTING
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)
*For Part Number information, refer to
“Section 4 - Exploded View/Part Number Information” on page 21
.
XBR-55X850B/65X850B 12
SECTION 2 - TROUBLESHOOTING
NO 3D VIEWING
Confirm with another
pair of Active
3D Glasses/
One Touch Remote
Control?
No
Double images
displayed on
screen?
Yes
Main Board*
No
Yes
Press “3D” button on
Remote Commander
and select
“Simulated 3D”.
Active 3D
Glasses
View image with
known working
pair of Active
3D Glasses.
Double images
become one?
Yes
3D OK
No
Bluetooth
Board*
3D Not Working
Double images
become one/
Remote works
OK?
*For Part Number information, refer to
“Section 4 - Exploded View/Part Number Information” on page 21
.
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