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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: KV27TW77/27TW78/27S10 No. 239
Subject: Failure of Horizontal Drive Transistor Date: January 9, 1995


Symptom:
(11) If the Horizontal Drive Transistor should fail please make the following circuit change.



Solution: Please remove the jumper wire across R515 and replace it with a 2 Watt 0.33 Ohm
resistor.

Model Aplicable Serial Number Range
KV-27TW77 7030813-7032812
KV-27TW78 7005676-7006015
KV-27S10 8101907-8103591


Only units with serial numbers listed above should require the jumper to be replaced
with the resistor.



INCORRECT CORRECT




Reference: FPR-P PRINTED IN USA
Autoflagged - NO
PRINTED ON RECYCLED PAPER