Sony KP-43T70 Training Manual page 92

SONY

Sony Service Company
National Technical Services
A Division of Sony Electronics Inc.
Park Ridge, New Jersey 07656
Model:
KP-48V80, KP-53N74, KP-53S70, KP-53V80
KP-61S70, KP-61V80
Subject: Bright Picture Followed By Shut-down.
Q706, Q733, Or Q764 May Be Damaged.
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
SG702
(CR BOARD)
SG732
(CG BOARD)
SG762
(CB BOARD)
Q706
(CR BOARD)
Q733
(CG BOARD)
Q764
(CB BOARD)
Reference: h. Iguchi
CONFIDENTIAL
Service Bulletin
TV Products
KP-43T70, KP-46C70, KP-48S70, KP-48S72
FORMER
DESCRIPTION
SPARK GAP
SPARK GAP
SPARK GAP
TRANSISTOR,
2SA1091-O
TRANSISTOR,
2SA1091-O
TRANSISTOR,
2SA1091-O
PART DESCRIPTION
NUMBER
1-519-422-11 SPARK GAP
1-519-422-11 SPARK GAP
1-519-422-11 SPARK GAP
8-729-200-17
8-729-200-17
8-729-200-17
csv-1
443
No.
Date:
December 1, 1999
NEW
PART NUMBER
1-517-729-31
1-517-729-31
1-517-729-31
SAME AS
FORMER PART
SAME AS
FORMER PART
SAME AS
FORMER PART
PRINTED IN USA