[vcf-midatlantic] Any trick to discharging ADM-3A

[Joseph Oprysko]

I would say yes. As long as not removing the rubber anode cup, the tube
connector on the end and/yoke can be removed without discharging the tube.

I had removed/swapped around several early Mac tubes without discharging
the monitor.

On Thu, Feb 8, 2018 at 8:51 AM corey cohen <coreyvcf at gmail.com> wrote:

> Ok.  Well then let me ask you and Ian this..
>
> Can I safely disconnect the plug at the end of the CRT neck without
> discharging?
>
> That would make it easier to take the tube out while the anode wire is
> still connected and then in can discharge the tube with a screwdriver.
>
> Also is the best place to clip onto the implosion bracket since the ADM
> doesn’t really have a metal chassis?
>
> Thanks,
> Corey
>
> *corey cohen*
>
> *uǝɥoɔ ʎǝɹoɔ*
>
> On Feb 8, 2018, at 12:01 AM, Joseph Oprysko via vcf-midatlantic <
> vcf-midatlantic at lists.vintagecomputerfederation.org> wrote:
>
> I’ve done the screwdriver trick myself. Because often, even after waiting a
> few weeks, there can still be enough voltage to make your hair stand on
> end. LOL
>
> On Wed, Feb 7, 2018 at 7:05 PM Ian Primus via vcf-midatlantic <
> vcf-midatlantic at lists.vintagecomputerfederation.org> wrote:
>
> I don't remember any particular trick or real difficulty in doing it.
>
> Maybe you needed to get the tube loose to get the screwdriver in
>
> there? But I thought it would fit in there without too much problem. I
>
> know I've done it a whole bunch of times and nothing sticks out at me
>
> as being out of the ordinary about working on the 3A. Remember you
>
> don't need to disconnect the anode connection right away, just
>
> discharge it.
>
>
> If you're doing a lot of work on one of those monitors, sometimes you
>
> do need to get a bit creative though:
>
>
> https://i.imgur.com/k2wPmw3.jpg
>
> https://i.imgur.com/UwU3gek.jpg
>
>
> -Ian
>
>
> On Wed, Feb 7, 2018 at 6:29 PM, corey cohen via vcf-midatlantic
>
> <vcf-midatlantic at lists.vintagecomputerfederation.org> wrote:
>
> So I was about to swap out my ADM5 for my ADM3a with my ALTAIR and
>
> realized while I did replace the electrolytic and tantalum caps on the main
>
> board, I didn’t change the electrolytic caps on the analog board behind the
>
> tube.
>
>
> No big deal except that the rubber cup is on the top where I can’t get
>
> to it without removing the tube and you aren’t really supposed to remove
>
> the tube till you discharge it under the rubber cup.    So chicken or the
>
> egg?
>
>
> Or am I just supposed to let the ADM sit unplugged for a few weeks and
>
> just assume it self discharged?
>
>
> Just when I thought I was finished with this project and was going to
>
> move onto my TI silent rebuild.
>
>
> Thanks,
>
> Cheers,
>
> Corey
>
>
> corey cohen
>
> uǝɥoɔ ʎǝɹoɔ
>
>
> --
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> --
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Geek: To be honest, it's due to all the surfing I do.
Normal Person: So you go surfing?
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lot...
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