[TenTec] 565 Orion I internal keyer problem. experience? advice?

[Katz Ajamas]

Aloha Barry!

I'm in digest mode :-)

Yes. Nothing plugged in. No continuity to ground on tip or ring. 5V on tip.
If I ground the tip, I get the expected alternating dots and dashes. If I
pull the ring up to 5V, the dashes do not stop.

I would like to check the interface on the A7 board but do not know where
it is on the board. I would like to check as far as possible without
disassembling the boards from the front panel.

There is also the problem of no audio from the sub-receiver. I've read
about problems caused by monaural plug in the headphone jack but find no
detail or repair info. If I'm going to disassemble the front panel boards,
I'd like to know more about where to look for the audio problem. There are
so many small parts on the board that I'd rather not spend half a day or
more matching them up with the wiring diagram. If it comes to doing that,
I'll take some photos and post them.

73, Bob ah7i/w4



> Is there a continuous stream of dashes with nothing plugged in the front
> and rear key jacks?
>
> Are you using a stereo (TRS) key plug, either 1/4in front or 3.5mm rear?
>
> Barry N1EU
>
> On Sat, Apr 11, 2015 at 4:14 PM, Katz Ajamas <ajamas.rn at gmail.com> wrote:
>
> > With the keyer enabled, there is a continuous stream of dashes.
> >
> > I do not see 5V on the ring of the paddle connection.
> >
> > I do see 5V on the tip.
> >
> > If I ground the tip, alternate dot-dash results.
> >
> > If I provide 5V, through a 10k R, to the dash line, there is no
> difference.
> >
> > This suggests that the line is being pulled low somewhere.
> >
> >
> > There is a keyer interface shown on the A7 diagram "81917_4 Drivers some
> > spares".
> >
> > Alas, Tentec does not provide photos of the boards showing parts
> location.
> >
> >
> >
> > I would rather be working on other projects and am willing to make
> someone
> > a good deal on this 565.
> >
> >
> > TX works.SSB and CW.
> >
> > Main RX works.
> >
> > It has 4 filters. AM SSB 1.8KHz 1kHz
> >
> > New battery for memory.
> >
> > Sharp display.
> >
> >
> > 73, Bob ah7i/w4
> > _______________________________________________
> > TenTec mailing list
> > TenTec at contesting.com
> > http://lists.contesting.com/mailman/listinfo/tentec
> >
>
>
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> End of TenTec Digest, Vol 148, Issue 15
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