[Johnson] Thunderbolt Plate Supply Transformers Failure History

[gkb]

If you don't want the hulk, I will take it and rewind it.
Regards,
Gary...WZ1M
----- Original Message ----- 
From: "C E" <catman351 at yahoo.com>
To: "rOAdpIzzA" <roadpizza at earthlink.net>; <johnson at mailman.qth.net>
Sent: Saturday, September 23, 2006 4:34 PM
Subject: Re: [Johnson] Thunderbolt Plate Supply Transformers Failure History


> Save the transformer hulk and install the newer one.
> In that case, you have something to which the next gen
> can put back to collector condition while having the
> amp operationa. Satisfies both of your requirements!
> Cal.
>
> --- rOAdpIzzA <roadpizza at earthlink.net> wrote:
>
> > Cal,
> >
> > Your points are well taken. Ummm, the dilema I face
> > is that I want to both operate this ol' venable amp,
> > and yet keep it as original as possible. Already
> > I've already encounted the suggestion that I encase
> > any ol' caps I replace with the cases of the
> > original caps, and that's not too hard since the now
> > available caps are so much smaller in diameter from
> > the originals, phew.
> >
> > For now I'm gonna go for 'getting it on the air' to
> > finish my 2m VUCC and 6m WAC, VUCC, and DXCC ( I
> > already did the 6M WAS and VUCC), but I don't want
> > to ruin this fine ol' vintage 6n2 amp  for the next
> > owner, since I'm sure I'll pass on b4 it will,
> > heheheh...
> >
> > Now that I can afford Johnson, I'm  trying to be
> > careful for the nextGen,
> >
> > Mark KX8XX
> >
> > ...-.-
> >
> > .
> >
> > .
> >
> >
> >
> >
> > -----Original Message-----
> > >From: C E <catman351 at yahoo.com>
> > >Sent: Sep 21, 2006 11:52 AM
> > >To: rOAdpIzzA <roadpizza at earthlink.net>,
> > johnson at mailman.qth.net
> > >Subject: Re: [Johnson] Thunderbolt Plate Supply
> > Transformers Failure History
> > >
> > >Mark:
> > >I think you'd be wasting your time trying to
> > service
> > >the T-bolt with something like the original xfmr.
> > Do
> > >you want to have a working amp or do you want one
> > sole
> > >for collector purposes? Just like vintage cars,
> > drive
> > >the thing and put in a replacement transformer. I
> > >would go hypersil  myself since it is available. I
> > did
> > >the same with a 32V2 a few years ago. I could have
> > >retained the original look of the LV xfmr but quite
> > >frankly,I was more concerned on getting on AM
> > >reliably. That 32V served me well for about a year
> > or
> > >so before I sold it off. Cal.
> > >
> > >--- rOAdpIzzA <roadpizza at earthlink.net> wrote:
> > >
> > >> I'm just now getting into Johnson equipment. What
> > >> little I know seems to indicate that this
> > renowned
> > >> for robust equipment mfg had a time of trouble
> > with
> > >> the Plate Voltage Supply Transformers in their
> > >> Thunderbolt amplifier series. Peter Dahl even
> > >> carries the replacements, both original and
> > >> hipersil, in stock!
> > >>
> > >> I want to know more about the failure mode,
> > please.
> > >> Overheating? Shorting, opening . . .
> > >>
> > >> I've one that's bad, and am fighting with trying
> > to
> > >> rewind it myself (as soon as I find where I
> > stashed
> > >> the fish paper for a rainy day) or to scrap a bad
> > >> design and go ruin originality and put in a Dahl
> > >> hypersil.
> > >>
> > >> Anyone I can help w/ pics or ??? of the HF and
> > 6N2
> > >> T-Bolt amps, email me - be sure to but something
> > in
> > >> the subject line of the email that will tell me
> > it's
> > >> not for the SPAM folder, eh?
> > >>
> > >> GL es 73 de Mark KX8XX ...-.-
> > >>
> > >> .
> > >>
> > >> .
> > >>
> > >>
> > >> Johnson mailing list
> > >> Home:
> > >> http://mailman.qth.net/mailman/listinfo/johnson
> > >> Help: http://mailman.qth.net/mmfaq.html
> > >> Post: mailto:Johnson at mailman.qth.net
> > >>
> > >
> > >
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>
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