DOWNLOAD Sony KDL-32EX550 Service Manual ↓ Size: 9.02 MB | Pages: 50 in PDF or view online for FREE

Model
KDL-32EX550
Pages
50
Size
9.02 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kdl-32ex550.pdf
Date
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KDL-32EX550 12
SECTION 3 - FLOW CHARTS AND DIAGRAMS
No Power
Is standby LED 
blinking?
No
Yes
No
See 
Protection Shutdown 
flowchart
Yes
Does red standby 
LED on front panel 
light?
High (>2.5V)
on pin 27 of CN6205 
on power supply?
Yes
No
Main Board*
Press power 
button while 
monitoring pin 28 
of CN6205 on 
power supply 
board
High (3.3V)
appears 
momentarily?
Yes
No
Power Supply 
Board*
Power Supply 
Board*
Power Supply 
Board*
Remove AC power and 
wait at least 30 
seconds before 
reapplying
NO POWER FLOWCHART
*For Part Number information, Refer to 
“Section 4 - Disassembly/Part Number Information” on page 16
.
KDL-32EX550 13
SECTION 3 - FLOW CHARTS AND DIAGRAMS
STANDBY LED BLINKING
Protect 
Shutdown. 
Standby LED 
Blinking
No
Yes
Power Supply 
Board*
Yes
2X
Main Board*
3X
No
5X
Yes
6X
No
7X
Imediately
TCON
(LCD Panel)*
Yes
No
After a while
Main Board*
Check ventilation
Power Supply 
Board*
8X
See Resolving an 
8x Error
PROTECTION SHUTDOWN FLOWCHART
*For Part Number information, Refer to 
“Section 4 - Disassembly/Part Number Information” on page 16
.
KDL-32EX550 14
SECTION 3 - FLOW CHARTS AND DIAGRAMS
NO PICTURE
No Video
Backlights 
turned on?
Unplug LVDS 
connector at 
TCON while unit 
is running. This 
may need to be 
done more than 
once
Any flashes 
seen on 
screen?
Yes
No
Any OSD 
graphics 
present?
No
Main Board*
No
Power Supply 
Board*
Yes
Yes
Main Board*
LCD Panel*
TCON Board* 
NO VIDEO FLOWCHART
*For Part Number information, Refer to 
“Section 4 - Disassembly/Part Number Information” on page 16
.
KDL-32EX550 15
SECTION 3 - FLOW CHARTS AND DIAGRAMS
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)
VIDEO DISTORTION
*For Part Number information, Refer to 
“Section 4 - Disassembly/Part Number Information” on page 16
.
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