Sony KP 48S70, Training Manual

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Model: KP-43T70, KP-46C70, KP-48S70, KP-48S72
KP-48V80, KP-53N74, KP-53S70, KP-53V80
KP-61S70, KP-61V80
No.
443
Subject: Bright Picture Followed By Shut-down.
Q706, Q733, Or Q764 May Be Damaged.
Date:
December 1, 1999
Symptom:
(1322)
The picture goes bright then the set shuts-down.
Solution:
If the customer should complain of the symptom above please replace three spark
gaps with the new type below. The CR, CG, and CB board might have one or more
of the following transistors fail: Q706, Q733, or Q764, so check them and replace any
that are found to be defective.
REF FORMER NEW
DESCRIPTION PART
NUMBER
DESCRIPTION PART NUMBER
SG702
(CR BOARD)
SPARK GAP 1-519-422-11 SPARK GAP 1-517-729-31
SG732
(CG BOARD)
SPARK GAP 1-519-422-11 SPARK GAP 1-517-729-31
SG762
(CB BOARD)
SPARK GAP 1-519-422-11 SPARK GAP 1-517-729-31
Q706
(CR BOARD)
TRANSISTOR,
2SA1091-O
8-729-200-17 SAME AS
FORMER PART
Q733
(CG BOARD)
TRANSISTOR,
2SA1091-O
8-729-200-17 SAME AS
FORMER PART
Q764
(CB BOARD)
TRANSISTOR,
2SA1091-O
8-729-200-17 SAME AS
FORMER PART
csv-1
Sony Service Company
National Technical Services
A Division of Sony Electronics Inc.
Park Ridge, New Jersey 07656
CONFIDENTIAL
Service Bulletin
TV Products
SONY

Reference: h. Iguchi
PRINTED IN USA