ts440s.39

I then installed an 820 ohm fixed resistor in
series with the cut loop.  I also put a very small dab of silicon seal
between the new "hung" resistor and the ferrite transformer right next to
it so that there would be no added strain on the remains of R27.  The
alternative would be to remove the final unit completely and do the mod
the right way, replacing the complete R27 with a 3k resistor.  This was
a step that I didn't really want to perform on a two week old rig.  When
you choose your series resistance, remember that the more resistance you
add to it, the sooner the fan will turn on.  If you go too high, it will
be on all the time.

This modification brings the fan on at least 10 deg. earlier. By the way,
my only reservation about this mod is the added wear and tear on the fan
unit itself.  I have been buying parts from Kenwood for about 10 years now
and they have always seemed remarkably inexpensive.  Ordering a spare fan
to have on hand seems like a very reasonable thing to do if you are worried
about it.