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

Ian Primus ian.primus.ccmp at gmail.com
Wed Feb 7 19:02:19 EST 2018

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:



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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