THANK YOU Ariel & Steve!!!!
Diagnosis Perfectus . . .
My depression suddenly is lifting, although
temporarily I have this teeny main tuning knob that
works backwards ;-)
How the main tuning encoder got clobbered between the
factory and my door is beyond my ken. Seems like they
should be fairly robust little jobbies.
But nice to diagnose it in fairly short order with the
help of this great group on the reflector. Also, some
kudos are due Ten-Tec for at least building a rig you
can pull apart and dig into with very little trouble.
Yahoo!!!
Tnx all & 73,
Barry N1EU
--- Ariel Elam <k4aal@jackatak.theporch.com> wrote:
> Hi to All-- I had problem that main tuning encoder
> would not change the
> frequency on foctory VI+. TT tech advised to
> interchange rit and main
> tuning cables (55 & 56 or 54& 55 if I remember
> correctly) and let rit
> encoder control main tuning to check. I did & it
> did. I then ordered a
> new main encoder and all is well
>
> 73, Ariel, k4aal
>
> Steve Baron - KB3MM wrote:
> >
> > OK. Now I know what frequency lock-up means <gr>.
> >
> > You should have pulses coming from both pahse
> lines. Wonder if you lost the
> > supply voltage or ground to the encoder. The only
> other possibility for no
> > pulses would be a bad encoder I guess.
> >
> > -----Original Message-----
> > From: N1EU <n1eu@yahoo.com>
> > To: tentec@contesting.com <tentec@contesting.com>
To: <tentec@contesting.com>
> > Date: October 09, 1999 1:59 PM
> > Subject: Re: [TenTec] Frequency Lockup Blues
> >
> > >
> > >To answer the questions posed by Phil & Steve,
> never
> > >happened before and PS is a nice TT 961.
> > >
> > >All of the other functions seem to be working
> except
> > >main tuning. User options can be set and
> retained,
> > >etc. and even RIT functions so she's not brain
> dead
> > >for sure.
> > >
> > >I looked at some of the digital lines, and would
> > >really appreciate some help with diagnosis.
> Here's
> > >what I've seen on the logic board - I started
> looking
> > >at the tuning encoder lines. RIT ("OFFSET")
> pulses
> > >are clearly seen coming into U19 pins 1/2/5/6 and
> U20
> > >21/22. However, no pulses at all are seen from
> the
> > >Main Tuning encoder coming into U18 8/9 or U20
> 19/20.
> > >Am I correct in assuming pulses should be seen
> there?
> > >I would be extrememly grateful for any hints on
> > >further troubleshooting.
> > >
> > >Tnx & 73,
> > >Barry N1EU
> > >
> > >
> > >
> > >
> > >=====
> > >
> >
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