DOWNLOAD Sony KDL-24R425A / KDL-32R424A / KDL-32R425A Service Manual ↓ Size: 4.5 MB | Pages: 32 in PDF or view online for FREE

Model
KDL-24R425A KDL-32R424A KDL-32R425A
Pages
32
Size
4.5 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kdl-24r425a-kdl-32r424a-kdl-32r425a.pdf
Date
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KDL-24R425A/32R424A/32R425A 9
SECTION 2 - TROUBLESHOOTING
 
*For Part Number information, refer to 
“Section 4 - Exploded View/Part Number Information” on page 20
.
NO POWER FLOWCHART
No Power
Is standby LED 
blinking?
No
Yes
No
See Standby 
LED Blinking
 flowchart  
Yes
Does red standby 
LED on front panel 
light steady?
Press power 
button while 
monitoring pin 4 of 
CN9101 on Power 
Supply Board.
High (3.3V)
on pin 4?
Yes
No
Main Board
High (3.3V)
on pin 1?
Yes
No
Unplug TV from 
AC power. Wait at 
least 20 seconds 
and re-apply AC 
power.
24"?
Press power 
button while 
monitoring pin 3 of 
CN9102 on Power 
Supply Board.
High (3.3V) on
pin 4?
High (3.3V) on
pin 1?
Yes
No
Power Supply 
Board
Power Supply 
Board
Yes
Power Supply 
Board
Power Supply 
Board
Main Board
Power Supply 
Board
No
Yes
No
KDL-24R425A/32R424A/32R425A 10
SECTION 2 - TROUBLESHOOTING
 
*For Part Number information, refer to 
“Section 4 - Exploded View/Part Number Information” on page 20
.
STANDBY LED BLINKING FLOWCHART
Protect 
Shutdown. 
Standby LED 
Blinking
No
Yes
No
Yes
2X
Main Board
3X
5X
No
Yes
LCD Panel
6X
Yes
Power Supply Board
“SONY” logo 
appears before 
shutdown?
Yes
No
LCD Panel
Power Supply Board
KDL-24R425A/32R424A/32R425A 11
SECTION 2 - TROUBLESHOOTING
 
*For Part Number information, refer to 
“Section 4 - Exploded View/Part Number Information” on page 20
.
NO VIDEO FLOWCHART
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
LCD Panel
Yes
Yes
Main Board
LCD Panel 
KDL-24R425A/32R424A/32R425A 12
SECTION 2 - TROUBLESHOOTING
 
*For Part Number information, refer to 
“Section 4 - Exploded View/Part Number Information” on page 20
.
VIDEO DISTORTION FLOWCHART
Video Distortion
Is distortion 
across entire 
screen?
Any horizontal 
lines?
No
No
Yes
Yes
Improper of 
missing colors?
Yes
Main Board
No
Vertical lines
or bars?
No
Yes
Lines move 
when wide-mode 
changed?
Yes
No
LCD Panel
Main Board
LCD Panel
Any single or 
isolated vertical 
lines?
Yes
LCD Panel
More than 1 
vertical band?
No
Yes
LCD Panel
Uneven 
brightness?
LCD Panel
Yes
No
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