[vcf-midatlantic] Univac repairs at Workshop

Jeffrey Brace jeffrey at vcfed.org
Sun Apr 14 22:18:24 EDT 2019

Thanks for making the trip Drom!


On Sun, Apr 14, 2019 at 7:45 PM Bill Dromgoole via vcf-midatlantic <
vcf-midatlantic at lists.vcfed.org> wrote:

> I made an emergency trip to the Museum today.
> I wanted to make sure the Univac system was operable for VCF-East
> Worked on Univac paper tape reader in the 1532 I/O console.. Rang out all
> the wires, measured the capacitors etc.
> When done it was working again. Maybe something in the wire harness?
> Who knows. It works again. I didn’t replace anything.
> Loaded punch tape we made last time at the six day workshop. Good load,
> clear al and au.
> Ran program and got bad punch tape.
> Replaced the card Duane suggested with a 2014 from the warehouse.
> Now it seems to work.
> Loaded the Mk-152 diagnostic program and computer still has same channel
> 17 problem.
> But the demonstration procedure is still the same for the docents.
> It works about 95%
> Didn’t have time to work on ASR-35 teletype but it seemed to work ok.
> A day well spent.
> Bill

Jeff Brace
Vice President
Vintage Computer Federation

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