Yahoo!!! Re:[TenTec] Frequency Lockup Blues

[Steve Baron - KB3MM]

Theyhave 100 W light bulbs in them and the filaments break during shipment.

Digikey (matbe Mouser) carries both Panasonic and CLarostat units...wonder
what mfg TT uses and what mfg says about them.


-----Original Message-----
From: N1EU <n1eu@yahoo.com>
To: k4aal@jackatak.theporch.com <k4aal@jackatak.theporch.com>; Steve Baron -
KB3MM <SteveBaron@starlinx.com>; tentec@contesting.com
<tentec@contesting.com>
Date: October 10, 1999 1:16 AM
Subject: Yahoo!!! Re:[TenTec] Frequency Lockup Blues


>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>
>> > 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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