[R-390] CV-591 Audio

[James A. (Andy) Moorer]

Last time I saw this
(1) C26 had shorted, which
(2) burned R34 and C25.

I replaced these and all was well.
Anything that causes extra current to flow through the 6AQ5 (V6) will stress
R34. It is a 2W 560 ohm cathode resistor. Also, if C25 opens, it will reduce
the audio gain quite a bit.

I had already determined that there was plenty of signal getting to the
audio stage.

Enjoy!
James A. (Andy) Moorer
www.jamminpower.com

----- Original Message ----- 
From: "mikea" <mikea@mikea.ath.cx>
To: <r-390@mailman.qth.net>
Sent: Wednesday, April 07, 2004 6:22 AM
Subject: Re: [R-390] CV-591 Audio


> On Wed, Apr 07, 2004 at 07:55:05AM -0400, Jim Brannigan wrote:
> > I just completed a substantial re-build and alignment of my CV-591 SSB
> > converter.
> >
> > The audio output is still low.  The Audio gain must be fully open to to
get
> > any reasonable audio output.
> >
> > Is this a drive problem from the R-390A?
> > Has anyone else experienced this problem?