Service Manuals, User Guides, Schematic Diagrams or docs for : Sony sony tv bulletins sony tv bulletins TVP0250
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TV Products CSV-1
Service Bulletin
Sony Service Company - Technical Services
A Division of Sony Electronics Inc.
Sony Drive, Park Ridge, New Jersey 07656
Model: KV-27S10/27S15/27TS29/27TS32 No. 250R1
KV-27TS36/27TW77/27TW78
KV-27V10/27V15/27V55
KV-32S10/32S15/32TS36/32TS46
KV-32TW77/32TW78/32V15
Subject: Audio Buzz (Noise) from speaker Date: June 13, 1995
Symptom:
(54) Audio Buzz (Noise) from speaker with low audio level
Solution: Please perform the following circuit change on M Board.
1. Remove M board from Main board.
2. Remove the listed reference components from M board. (See chart below)
3. Add 0 ohm chip resistor to R219 and R201.
4. Add 0 ohm resistor between Pin 1 of IC202 and Pin 3.
5. Add 0 ohm resistor between Pin 5 of IC202 and Pin 7.
6. Reinstall M board and redress wire to original condition.
REF FORMER NEW
DESCRIPTION PART NUMBER DESCRIPTION PART NUMBER
R203 47K OHM, CHIP 1-216-089-00 NONE NONE
RESISTOR
R210 47K OHM, CHIP 1-216-089-00 NONE NONE
RESISTOR
R204 47K OHM, CHIP 1-216-089-00 NONE NONE
RESISTOR
R208 47K OHM, CHIP 1-216-089-00 NONE NONE
RESISTOR
R218 10K OHM, CHIP 1-216-073-00 NONE NONE
RESISTOR
R202 10K OHM, CHIP 1-216-073-00 NONE NONE
RESISTOR
R219 10K OHM, CHIP 1-216-073-00 0 OHM, CHIP 1-216-295-00
RESISTOR RESISTOR
Reference: B. Chisholm PRINTED IN USA
Autoflagged - NO
PRINTED ON RECYCLED PAPER
Audio Products Service Bulletin No. 250
REF FORMER NEW
DESCRIPTION PART NUMBER DESCRIPTION PART NUMBER
R201 10K OHM, CHIP 1-216-073-00 0 OHM, CHIP 1-216-295-00
RESISTOR RESISTOR
R209 33K OHM, CHIP 1-216-085-00 NONE NONE
RESISTOR
R207 33K OHM, CHIP 1-216-085-00 NONE NONE
RESISTOR
C202 220P, CHIP 1-163-001-00 NONE NONE
CAPACITOR
C205 220P CHIP 1-163-001-00 NONE NONE
CAPACITOR
IC202 IC, LM358 8-759-276-27 NONE NONE
IC202, NONE NONE 0 OHM, CHIP 1-216-295-00
PIN 1-3 RESISTOR
IC202, NONE NONE 0 OHM, CHIP 1-216-295-00
PIN 5-7 RESISTOR
Audio Products Service Bulletin No. 250
Audio Products Service Bulletin No. 250
Filename: TVP0250.SB
Directory: J:\SBDOC\JUN95
Template: C:\WINWORD\TEMPLATE\S_BULL.DOT
Title:
Subject:
Author: Hoyt Wing Lee
Keywords:
Comments:
Creation Date: 06/02/95 2:47 PM
Revision Number: 5
Last Saved On: 06/14/95 2:17 PM
Last Saved By: Hoyt Wing Lee
Total Editing Time: 25 Minutes
Last Printed On: 04/01/96 9:14 AM
As of Last Complete Printing
Number of Pages: 4
Number of Words: 299 (approx.)
Number of Characters: 1,707 (approx.)
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