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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 # 1013
MODEL: TH-78A
SUBJECT: Left Encoder Inoperative                               

Symptom:
The left encoder on the top panel does not work. This symptom usually occurs
when the unit is reassembled after service.

Cause:

If the front panel is removed without removing the top panel the Control unit
might come in contact with the encoder mounting hardware. This causes chip
resistor R97 to be sheared from the board.
  
Corrective Action:

Delete chip resistor R97 from the control unit and add a short jumper wire in
its place.  Resistor R97 was used to prevent feedback during transmit.  It has 
been confirmed by our engineering staff that the performance of the circuit 
will not be adversely affected by this change.

Time required for this modification is 30 minutes or less.
Service code A:13 B:X53-342X-XX C:R97 D:91