Service Manuals, User Guides, Schematic Diagrams or docs for : Sony sony tv bulletins sony tv bulletins TVP0504

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                                          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:          KP-53HS10, KP-61HS10                                               No.       504
Subject: Audio Dropout/Distortion Under Low AC                                     Date: September 21, 2000
         Conditions.


Symptom:
 (2511)                Audio mutes or distorts under low AC conditions



Solution:              If the customer should complain of audio dropout please make the following circuit
                       changes on the "K" Board.

                       1. Change the value of capacitor C2054 to 10uf/ 50v.
                          Note: It is possible to use a 16v, or 25v rated capacitor as a substitute.

                       2. Mount a 10uf/50-volt capacitor from the anode side of diode D2023 with the
                          negative side of the cap to ground.

         Ref                Description Former            Description New             Part Number

      C2054                470UF/16v                      10UF/50V                   1-126-964-11

      C1                   Not Mounted                    10UF/50V                   1-126-964-11




Reference: SBR9918                                                                                     PRINTED IN USA
TV Products Service Bulletin No. 504




                                                       Q2017
       K Board


                                                                           Positive
                                                                           side of the
                                       Change C2054                        cap
                                       to 10UF



                                                      Mount a 10uf/50V capacitor with
                                                      the positive side of the cap to the
                                                      anode side of D2023.
TV Products Service Bulletin No. 504




                               C2054 Replace with 10uf/50V




   Add C1
   10uf/50V (positive side
   of capacitor to anode
   side of D2023).

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