[R-390] Dead R-390A Update

[Dennis L. Wade]

Have a good look at the mechanical section of the RF deck....wonder if a 
  gear clamp gave way all of a sudden.  Watch and make sure all the slug 
racks move when you turn the Mc/s and Kc/s knobs.

             Dennis


Bill Keller wrote:
> 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 restore
d 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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