Sony KDL-32R420B / KDL-40R470B Service Manual ▷ View online
KDL-32R420B/40R470B 9
SECTION 2 - TROUBLESHOOTING
NO POWER FLOWCHART
No power
No
See Standby
LED Blinking
flowchart
Yes
No
AC Adaptor*
Replace the
19.5V AC Adaptor
Main Board*
Does the
TV turn
ON?
Yes
Is red standby
LED on front panel
blinking?
*For Part Number information, refer to
“Section 4 - Exploded View/Part Number Information” on page 17
.
KDL-32R420B/40R470B 10
SECTION 2 - TROUBLESHOOTING
STANDBY LED BLINKING FLOWCHART
No
Yes
Fuente de Poder*
Yes
Yes
2X
3X
5X
No
Yes
4X
No
LCD Panel*
6X
“SONY” logo
appears before
shutdown?
No
Main Board*
Yes
Light Source
Board*
AC Adaptor /
Main Board*
Main Board*
Main Board*
Protect Shutdown.
Standby LED
Blinking
Yes
*For Part Number information, refer to
“Section 4 - Exploded View/Part Number Information” on page 17
.
KDL-32R420B/40R470B 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 17
.
KDL-32R420B/40R470B 12
SECTION 3 - REPAIR INFORMATION
REPAIRING THE TV
If the latest Software does not correct the issue, complete the following:
1. Verify the television has the symptom the customer indicated.
2. Replace part causing the symptom.
3. Install the latest version of Software (Required for ALL repairs).
4. Perform the required service adjustments and checks.
5. Verify the repair resolved the issue.
REMOVING THE TABLE TOP STAND
1.
Place TV face down on a flat and steady surface.
2. Remove all screws and grasp as shown to detach the Table Top Stand.
REMOVING THE LOWER COVER
1. Locate and remove all screws from the Lower Cover.
KDL-32R420B
KDL-40R470B
2. Locate the areas shown in the illustration and detach the Lower Cover
from the TV.
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