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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   <<<
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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 # 881
MODEL: TS-930S
SUBJECT: POWER SUPPLY SURGE PROTECTION

A line surge (exceeding approximately 4.5KV) due to static electricity 
or nearby lightning discharge may short power relay diode,D2 (V06E), 
and cause electrolytic capacitor C14 (3.3 uf) to break down. 
This results in relay chatter and the relay contacts may finally weld.

Addition of the surge absorber to the primary power supply input circuit, 
should help avoid this type of failure.

NOTE: This symptom has occasionally occurred in those limited areas 
      subject to frequent and violent lightning discharges. 
      A good earth ground and antenna system lightning protection is 
      still strongly recommended.


ADD PART D9 (ERZClODK431) ACROSS THE AC LINE INPUT 

Note: This change applies to units before S/N 3080301.