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World of Ham Radio 1997
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WOHR97_AmSoft_(1997-02-01).iso
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1997-02-01
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==============================================================================
K E N W O O D
>>> A M A T E U R R A D I O S E R V I C E B U L L E T I N <<<
==============================================================================
Kenwood Service Centers
Kenwood Service Corporation Kenwood Service Center, East
2201 East Dominguez Street 829 Lynnhaven Parkway, Suite 130
Long Beach, California 90801 Virginia Beach, Virginia 23452
Telephone 1-310-639-5300 Telephone 1-804-340-1702
==============================================================================
BULLETIN # 1044
MODEL: TS-50S
SUBJECT: Mechanical Noise from Final Unit
Symptom: When the transceiver is subjected to vibration a mechanical noise
can be heard from the output transformer area. This has led to concern by
several consumers that something is loose or improperly installed.
Corrective Action: In order to ease consumer concerns you should add a
cushion under transformer L4 as shown in the accompanying diagram, and
replace transformer L13 at the same time. This transformer has been fastened
to the circuit board with high temperature adhesive, so use caution when
removing it from the circuit board.
Parts Required:
Qty Description Old Part No. New Part No. Circuit Description
1 Cushion N/A G13-0871-04 Under L4
1 Transformer L39-1209-25 L39-1252-05 L13
:::::::
:O:::O: <--- Output Transformer L4
:::::::
_______XXXXXXX_______ Cushion G13-0871-04
Final PC Board (X45-3460-00)
Time required for this modification is 30 minutes or less.
Service code A:08 B:X45-348O-O0 C:L13 D:91