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Sony Service Company National Technical Services A Division of Sony Electronics Inc. Park Ridge, New Jersey 07656
CONFIDENTIAL
Service Bulletin TV Products
No.
CSV-1
Model:
KP-53HS10, KP-61HS10
504
Subject: Audio Dropout/Distortion Under Low AC Conditions. Symptom: (2511)
Date: September 21, 2000
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 C2054 C1
Description Former 470UF/16v Not Mounted
Description New 10UF/50V 10UF/50V
Part Number 1-126-964-11 1-126-964-11
Reference: SBR9918
PRINTED IN USA
TV Products Service Bulletin No. 504
Q2017 K Board
Change C2054 to 10UF
Positive side of the cap
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).