[Yaesu] FT-101 Won't Xmit on LSB

[Stuart Bloom]

 I have had occassional problems with my FT-101EE like
    yours (transmits in "tune" and "CW", but not in
LSB). 
    Mine turned out to be a dirty Mode switch.  I
guess my
    radio was owned by a smoker at one time.  I have
had
    to clean all of my wafer switches.  The mode and
band
    switches were the worse.  I used a good
electronics
    contact cleaner, followed by CAREFUL application
of
    some radio shack tuner cleaner.  Be careful with
both,
    since some brands come out very powerfully, you
don't
    want to get the stuff sprayed on the clear plastic
    meter window parts.  Also, the radio shack stuff
has a
    lubricant in it, you don't want to get it all over
the
    other components, since it makes the inside turn
into
    a dust magnet.
    I ended up doing mine about 4 times over a
months's
    perdiod until the wafer switches "cleaned up".  My
    mode switch still gives me an occasional problem. 
I
    just rotate the switch from one end to the other a
few
    times and it clears up.
    This sounds like a simple solution, and maybe
yours is
    more of a real problem.  But, this worked for me.

    
    Something else to consider.  I got a set of Fox
Tango
    newsletters.  One tip from them is to do a
wholescale
    house cleaning.  I carefully pulled all of my
printed
    circuit boards and used the same cleaning regimen
on
    the PC board contacts and the slot contacts (you
may
    want to use a commercial edge contact cleaner like
    "De-oxit").  I also cleaned the contacts on the
relays
    and relay sockets.  This improved my ability to
tune
    up on 10 meters.
    
    Stuart
    KD5HVO

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