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                             K E N W O O D
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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 # 1026
MODEL: TS-950SDX
SUBJECT: "Click Noise" with NOTCH ON

Symptom:

A click noise might be generated when receiving a strong signal (S-9 or above)
when the NOTCH is ON and the Notch Control is turned away from the notch point.


Corrective Action:

Lengthening the AGC release time of the IF Amp just before the NOTCH circuit
will correct this symptom. The enclosed modification has been designed to
change the time constant only when the NOTCH circuit is activated.   Do not
install this modification on sets that do not exhibit this symptom as the AGC
FAST  time constant is affected by this change.

1. Cut the printed circuit foil pattern between the test point (TP) and
   gate 2 of Q2 as shown.
2. Install the 47 K ohm chip resistor from TP to gate 2 of Q2.
3. Add a 0.047 uF ceramic capacitor as shown in the accompanying
   illustration.
4. Add the DTC124ES transistor as shown.

Note: The .047 uF capacitor and the digital transistor must be connected
      together as shown and installed so that they do not touch the 
      surrounding circuit board patterns.
5. Install a jumper wire from the base of the digital transistor to pin
   number 6 of CN14.

Parts Required:
Qty     Description             Kenwood Part No.       Circuit Description
1       0.047 uF capacitor      CK45B1H473Z                     NA
1       Digital Transistor      DTC124ES                        NA
1       47K Chip resistor       RK73FB2A473J                    NA      


Caution:   This modification requires soldering equipment rated for CMOS type
circuits.  It also requires familiarity with surface mount soldering
techniques.  If you do not have the proper equipment or knowledge do not
attempt this modification yourself.  Seek qualified assistance.

Time required for this modification is 1 hour or less.
Service code A:09 B:X57-4130-00 C:ADDTR D:91