[Uram-rejections] Eddystone refurbishing?

Wed Mar 2 08:51:48 GMT 2016

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> From webstump at chiark.greenend.org.uk Wed Mar 02 07:19:52 2016
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> From: "Jim GM4DHJ ..." <james.stewart497 at ntlworld.com>
> Newsgroups: uk.radio.amateur.moderated
> Subject: Re: Eddystone refurbishing?
> Date: Wed, 2 Mar 2016 07:19:49 -0000
> Organization: A noiseless patient Spider
> Message-ID: <nb640v$904$1 at dont-email.me>
> References: <4KtYOk0CXh1WFw8u at b-howie.demon.co.uk> <nb5671$pn4$1 at stc.eternal-september.org>
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> 
> "Stephen Thomas Cole" <usenet at stephenthomascole.com> wrote in message 
> news:nb5671$pn4$1 at stc.eternal-september.org...
> > Brian Howie <brian at b-howie.demon.co.uk> wrote:
> >> In message <nb51so$9hj$4 at stc.eternal-september.org>, Stephen Thomas Cole
> >> <usenet at stephenthomascole.com> writes
> >>> Rambo <Rambo at thisaintreal.org> wrote:
> >>>> On Tue, 1 Mar 2016 06:31:10 -0000, "Jim GM4DHJ ..."
> >>>> <james.stewart497 at ntlworld.com> wrote:
> >>>>
> >>>>>
> >>>>> "Brian Reay" <no.sp at m.com> wrote in message
> >>>>> news:nb2omg$i4f$1 at dont-email.me...
> >>>>>> Mike Tomlinson <mike at jasper.org.uk> wrote:
> >>>>>>> En el artÃfÆ'Ã?â?TÃfâ?sÃ,Âculo 
> >>>>>>> <fIax+hacRI1WFwpB at b-howie.demon.co.uk>, Brian Howie
> >>>>>>> <brian at b-howie.demon.co.uk> escribiÃfÆ'Ã?â?TÃfâ?sÃ,Â³:
> >>>>>>>
> >>>>>>>> Farnell have a  decent  amount of stock . I think the usual trick 
> >>>>>>>> for
> >>>>>>>> restoring old  tubular electrolytics  is to remove the insides, 
> >>>>>>>> then put
> >>>>>>>> the hopefully smaller component inside
> >>>>>>>
> >>>>>>> I offer you this:
> >>>>>>>
> >>>>>>>    http://oi63.tinypic.com/fp82oo.jpg
> >>>>>>>
> >>>>>>> this should be quite interesting, installing a 35v cap inside the 
> >>>>>>> can of
> >>>>>>> a 400v cap inside the can of <whatever voltage is required for a 
> >>>>>>> valve
> >>>>>>> radio>.  If maybe a little explosive.
> >>>>>>>
> >>>>>>> The pic is of a cheapo Chinese eBay replacement for a 6800uF 400v
> >>>>>>> capacitor.  Caveat emptor, etc.
> >>>>>>>
> >>>>>>
> >>>>>> That doesn't sound like something to be recommend.
> >>>>>>
> >>>>>> I've put modern capacitors inside several styles of old ones, 
> >>>>>> including
> >>>>>> the
> >>>>>> metal canned terminal ones common in WW2 era radios. I think they 
> >>>>>> were
> >>>>>> originally paper capacitors which had some oil like substance which 
> >>>>>> had
> >>>>>> 'dried out'.
> >>>>>>
> >>>>>> I've also, very carefully, used a Dremel (well a copy) to remove the
> >>>>>> centre
> >>>>>> from a resistor which had 'gone high' so I could put a modern one 
> >>>>>> inside.
> >>>>>> I
> >>>>>> practiced on a couple of similar resistors first, had a strong 
> >>>>>> coffee, and
> >>>>>> went for it. The trick is to work around the lead stub first, so you 
> >>>>>> a
> >>>>>> left
> >>>>>> with a hole with a 'pillar' (the lead will have dropped off). Break 
> >>>>>> the
> >>>>>> pillar off, then enlarge the hole.
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>> shocking use of stimulants ....
> >>>>>
> >>>> Are people aware of the dangers of PCB's in capacitors?
> >>>
> >>> Maybe they're not. I certainly ain't! What are the dangers?
> >>>
> >>
> >> It can cause liver cancer amongst other things. So watch out for big old
> >> leaky capacitors.  Old non polarised HV ones in particular. Mr Google
> >> will help.
> >>
> >> Brian
> >
> > Ah, your post confused me so I hit Google up and learned that the PCB in
> > question is polychlorinated biphenyl, not printed circuit boards. My 
> > bad...
> >
> > STC // M0TEY // twitter.com/ukradioamateur
> 
> ...even I knew THAT...tee hee 
> 
> 
> 
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