[R-390] R390A- no sigs-4 to 8mc.

[jmiller1706 at cfl.rr.com]

I once had one of the RF coil cans go bad in an RF deck..  Knocked the whole band out.  Check continuity of all the coils for that band.  Check the crystal for that band to be sure it is oscillating (look at the osc output).  
---- Roger Gibboni <rgibboni at dulye.com> wrote: 
> Well, if you've been working on it for weeks, you've probably tried these
> things but I would try:
> 
> 2nd LO oscillator frequencies
> Mechanical line up of RF rack cams---see pic in the manual
> 
> You didn't say how it worked on the other bands. Is the sensitivity good?
> Less than a few microvolts? If it is good elsewhere, that usually means the
> IF and audio are fine--not that this would be an audio problem.
> 
> Roger WA3YTM
> 
> On Mon, Feb 2, 2009 at 9:55 PM, Barry <n4buq at knology.net> wrote:
> 
> > It would seem that's something in or around one of the IF transformers.  A
> > single crystal wouldn't take out a range of frequencies and the 17mc
> > oscillator would take out everything below 7mc so I'd figure an IF
> > transformer.
> >
> > Barry
> >
> > ----- Original Message -----
> > From: <wb3fau at att.net>
> > To: <r-390 at mailman.qth.net>
> > Sent: Monday, February 02, 2009 8:47 PM
> > Subject: [R-390] R390A- no sigs-4 to 8mc.
> >
> >
> > >I have been  beating my brains  on this receiver for weeks.  I am ready to
> > >give  it up  for adoption.  This was  a put together project.  From
> >  pieces
> > >all  over the country.  It does work  on the other  bands.  Thanks for
> > your
> > >advice- Russ.
> > >
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