[R-390] Dead R-390A Update

[Cecil Acuff]

Bill you need a meter.  It's time to take some voltage readings.  You also 
need a copy of the Y2K manual.

Cecil...
----- Original Message ----- 
From: "Bill Keller" <kellerfamily01 at charter.net>
To: <r-390 at mailman.qth.net>
Sent: Sunday, February 20, 2005 5:05 PM
Subject: [R-390] Dead R-390A Update


The situation with this radio is getting more confusing.  I went through it 
and checked every tube substituting one tube at a time and found nothing - 
ended up leaving the old tubes in.  I also checked all connections and 
replaced the can holding Y201 & Y203 - didn't help, so left original can and 
crystals in.  So, nothing was actually replaced, but somewhere during the 
time I was doing the checking, the radio gradually went from totally dead to 
barely working.  The strongest signals will now come in barely audible with 
the gain all the way up but still not strong enough to copy.  If I turn the 
limiter on, they get slightly stronger.  And if I turn on the BFO, they get 
even a little bit stronger, but still not strong enough to even hear unless 
the gain is turned all the way up.  I can barely tell that signals are 
there, and that includes nearby broadcast stations.  Nothing, of course, is 
anywhere near strong enough to even budge the S meter.  This radio was 
totally restored by Miltronics a few years back and is exceptionally clean, 
so I know that it's well worth fixing if I ever get smart enough to figure 
out what's wrong with it.  And if I have the time and space to take it apart 
to work on it.
Bill K.
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