[Kenwood] TS-940SAT fan help

[wb4mle at ctvea.net]

>Lubing the sleeve bearing is certainly worth a try, but many of the 940 
>fans are 20 years old, and depending upon the hours the unit has may 
>have exceeded the life expectancy of the motor.  Also, I have seen fans 
>that have previously been "lubricated" with ?? or worse, sprayed with 
>WD-40, the all purpose bearing destroyer, and are so gummed up they can 
>hardly be turned by hand!
>
>Many of the "failed" 940 fans will run from a stiff 12V supply, (we 
>don't know for how long,) but draw too much current from what is an 
>essentially current limited source.  Bottom line is, you DON'T want the 
>fan to fail un-noticed in a 940.  Normally it's low noise is covered by 
>ambient noise and you don't know it's failed until serious damage has 
>been done.
>

This is the failure mode on the motor from my TS-940SAT. It would run
till it heated up and then begin to slow and drop the voltage to
around 3 volts.  

I am seriously considering taking the output that went to the old
motor and using it to drive a flashing led and piezo buzzer as the old
fan controller never gets hot enough now to activate. This will give
me an overheat warning if the rig gets too hot.
-- 
Eddie, WB4MLE