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                        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

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BULLETIN # 928
MODEL: TS-140S
SUBJECT: Intermittent loss of TX power


In some TS-140S transceivers, the drive transistor, Q2, is not firmly
mounted to the heatsink.  This can cause a loss of transmit power after the
unit warms up.  The following modification will correct this condition.

1.   Disconnect the TS-140S from the antenna and power supply.
2.   Remove the top and bottom covers.  Open the sub-chassis.  Refer to the
     instruction manual for step by step instructions.
3.   Remove the shield plate from the sub-chassis (12 screws) to expose the
     filter an final units.  Do not loose the 2 springs that are secured 
     by the right side screws.
4.   Resolder Q2 so that the transistor makes firm contact with the heat
     sink on the Final unit.  Tighten the transistor's mounting screw.
5.   Assemble the transceiver by reversing steps 1 through 3.


Time required for this change is 1/2 hour or less.