Service Manuals, User Guides, Schematic Diagrams or docs for : Sony sony tv bulletins sony tv bulletins TVP0557
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S CONFIDENTIAL CSV-1
Sony Service Company
National Technical Services Service Bulletin
A Division of Sony Electronics Inc.
Park Ridge, New Jersey 07656 TV Products
Model: KV-32XBR400, KV-32XBR450, KV-32HS20, KV- No. 557
32FS10, KV-32FS12, KV-32FS13, KV-32FS16,
KV-32FS17, KV-32FV1, KV-32FV15, KV-32FV16,
KV-32FV26
Subject: Flashing Picture and/or CRT Arcing. Date: January 30, 2002
Symptom:
(2356) The picture may intermittently show a bright flash. The flash is typically a bright white
horizontal bar about an inch wide that may appear anywhere in the picture. Several
such horizontal bars may appear in succession. The flash may be accompanied by
an arcing sound, or an arcing sound may be heard even though no flash is observed.
NOTE: The warranty claim form must include CRT serial
number in addition to the TV serial number. Claims that do
not include both the CRT serial number and the TV serial
number will be rejected.
Refer to the CRT serial number found on the WTDS label on the back of the CRT,
and copy it into the "Explanation of Service Performed" section of the NARDA
Warranty Claim form. Enter the number in this format: "CRT S/N nnnnnnnnnnnn".
Example for label shown below: "CRT S/N 121111145509"
CRT serial number
WTDS label found
on the CRT.
Solution: First, confirm the condition by the following methods:
1- Observe the flash on the screen.
or
2- Observe arcing between the CRT pins by looking at the end of the CRT neck
while the set is on.
Continued on next page........
Reference: PASCO E-MAIL 11/15/01 PRINTED IN USA
TV Products Service Bulletin No. 557
If either of the 2 conditions listed on the previous page are met, turn the set off and
remove the C-board from the CRT, and observe the condition of the RTV that
insulates the CRT pins and also keeps the plastic end cap attached to the neck.
The RTV is OK if it appears as shown in picture # 1 below. The RTV must fill
the gap between the plastic stem-base cap and the end of the CRT neck
(no gaps or bubbles), and it must completely surround the focus pin and must
extend to points A and B as shown in picture #1.
If the RTV looks like that shown in picture # 2, it is insufficient and must
be replaced.
Stem-base cap flange Point A
RTV must
surround the pins
and surface area
indicated by the
white dots.
Tip
Point B Focus Pin
Picture # 1: RTV Picture # 2: RTV
application is good. application is no good.
DESCRIPTION PART NUMBER
STEM BASE CAP T-9986-092-0
RTV, TYPE KE-3490 T-9986-091-9 *
TOOTHPICKS OBTAIN
LOCALLY
ETHANOL OBTAIN
LOCALLY
* The initial supplies of the RTV will be in 10oz. tubes; you will need a caulking
gun to use with the 10 oz. tubes. Smaller squeeze-tubes will be available after
the 10 oz. tubes are depleted from stock.
TV Products Service Bulletin No. 557
Procedure
1- Carefully cut the existing RTV between the stem base cap and end of the CRT neck.
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