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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 # 949
MODEL: TS-440S
SUBJECT: PROTECTING Q33

If pin 7 (RL) of the remote connector is accidently
connected to ground, current from the 14 volt line (14L)
will damage transistor Q33 on the IF unit. This will prevent
the radio from transmitting. To protect Q33, a 4.7 ohm
resistor should be installed in series with the RL line on
the foil side of the IF board. In the event that pin 7 is
connected to ground, the resistor will open, but the
transceiver will still be capable of transmitting.


REQUIRED PART:

4.7 OHM, 1/6 WATT RESISTOR ........ RD14CB2C4R7J


1.	Disconnect the power supply and antenna from the
	transceiver.

2.	Using a #2 Phillips screw driver, remove the 9 screws
	from the top cover of the transceiver. Remove the cover
	and unplug the speaker wire.

3.	Locate connector 19 on the IF unit.

4.	Using a #1 Phillips screw driver, remove the 7 screws
	that secure the IF unit to the chassis of the
	transceiver.

5.	Pull the board up and rotate it towards the front of the
	transceiver to expose the foil side of the board.

6.	On the foil side of the board, locate the trace that is
	connected to pin 3 (brown wire) of connector 19.

7.	Using a craft knife, cut the trace comming from pin
	three so as to open the foil trace.

8.	Solder the 4.7 ohm resistor across the now open trace
	(i.e. in series with the trace).

9.	Assemble the transceiver by reversing steps 1 - 5.

Time required for this modification is 0.5 hrs or less.