In addition to checking the headphone connections, if you get to a complete
failure, then solving that becomes much more simple, IF you have the tools.
Of course with an o'scope, you could quickly locate where the audio
amplification stops. Lacking an o'scope, you might try taking voltage
measurements around the audio output circuits.
Also keep in mind that older Ten Tec rigs suffered from 'bad' soldering
joints and intermittent problems like this could often be fixed by
re-heating the soldering connections around the components. Fortunately,
their later gear (Omni 5 and later) had much improved soldering techniques.
But that is still worth a look to see if, around the audio output circuits,
you see some dull looking soldering. That is assuming you still have S-meter
action when you loose the audio. If your S-meter quits at the same time you
lose the audio, then the problem is probably further back in the low-level
circuits and your gonna need some test equipment or a trip back to Ten Tec!
Tommy
W4BQF
-----Original Message-----
From: tentec-bounces@contesting.com [mailto:tentec-bounces@contesting.com]
On Behalf Of Robert Dwiggins II
Sent: Monday, April 11, 2005 7:23 PM
To: tentec@contesting.com
Subject: Re: [TenTec] Omni 6 (Option 1) Intermittent Audio
I am experiencing the same audio symptoms that Chuck, AF4PP, describes. My
radio
is a Tentec Omni VI/Opt 3. The problem started a couple of months ago, very
intermittently, but it's gradually gotten worse. I originally thought it
was a
component or wire seating problem (and it may still turn out to be such a
problem), but jiggling was no help. Rather, it acts like some component has
gone
bad because it's having these problems just about all the time now.
Sometimes I
can run the AF gain up and still get almost no audio, and what I do get is
muffled and distorted.
So, if anyone knows what Chuck's problem is, it'll be a big help to me, too.
73,
Bob NE5RD
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