[GreenKeys] Curious Model 15/19 problem

[Joe Duszyński]

You are correct "in Keyboard" the punch attached to the keyboard does not
operate,
But the reperf punch does operate without error. I mixed my punches LOL.
That was an error on my part. I was  a bit frazzed last night.
So I clipped the punch power wire when I got home. And the problem is gone
so something when the punch operates/cycles is causing the problem.








On Wed, Nov 17, 2021 at 2:55 PM John W9DDD <w9ddd at tapr.org> wrote:

> So the punch power is separate from the loop supplies?  And telex probably
> rules out any wild stuff the military did to operate on all strange
> voltages and frequencies.
>
> You said something that didn't ring true.
>
> "With the switch set to "Keyboard"
> The machine works fine, types fine, punches tape fine, there is also a
> typing reperforator on the loop it prints fine and the computer reads the
> loop ZERO PROBLEMS along with another teletype on the loop no issues in
> this mode."
>
> I don't think it's supposed to punch tape in the. Keyboard mode, but it's
> been too many years since I owned a 19.  Perhaps that was a reference to
> the reperforator punching fine?
>
> Here's a wild thought  The number two contact on the keyboard is on the
> hairy edge of its adjustment range and the punch magnet sets up some sort
> of vibration that messes up number 2 contact.  Or that it only affects
> number two because of the timing.
>
> If there's merit to that idea, then I'd start with being sure there are no
> punch parts loose.
>
> Crazy idea, but who knows?  It's the best I have at the moment.
>
> I start with being
> John, W9DDD
>
>
> > On Nov 17, 2021, at 7:25 AM, Joe Duszyński <joeduszynski1 at gmail.com>
> wrote:
> >
> > @John
> > Western Union Telex was taken out of service I'd guess 1980ish,
> > complete 19 table setup, synch motor keyboard perf base,
> > Western Union Power supply has a solid steady 120vdc 60ma running the 15
> printer, a 14 typing reperf and another 14 tape printer plus computer.
> > It has 2 loops in the power supply the second one isn't hooked to
> anything on the terminals inside the set. And the adjustment is at 120ma on
> that side the slider is about mid way on the resistor.
> > I've had stuff hooked up to that other side of the powersupply using a
> military line unit to bring the current down to 60ma so I didn't have to
> dink with the slider inside the set. At that time it ran everything I had
> hooked to it, But I also haven't messed with that side in maybe 6 or 8
> months.
> > The side I'm using like I mentioned is at 60ma  the slider on that side
> is toward the end of the resistor.
> > Everything is hooked up/wired according to the WU schematic that I have
> with the exception of the "TELEX" box its gone. I have that jumpered out
> for the set to run.
> > FYI I'm looking for one of those WU Telex boxes (has 3 12 pin molex
> connectors on it) it doesn't have to work I want the box to house a
> microcontroller.
> > If I don't find a real one gonna 3D print a faux one...(A project for
> another day)
> >
> > Tonite when I get home going to try and cut/disconnect the wire to the
> punch coil and see if that is where the issue is...???.
> > I'll post my results about 6 or 7 ish
> > It's darn odd.
> > JD
> >
>
>
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