I had not expected to open a cupboard and find this. Unfortunately it is well wedged in, so I can’t judge its state until I clear all the surrounding guff 🤦‍♂️ #retrocomputing #RetroHowOnEarthDidThatAppear
It is very pretty. Look, it even has the Christmas screensaver still running! Someone has chopped off the plug, which is just as well, as it is a 115V model (were they all?)
#retrocomputing

Someone had become frustrated at not being able to open the case and has drilled the tops off the bolts that secured the front of the clam shell, under the keyboard, so the top swings up fairly easily on the rear hinges to reveal a Ball TVX-12 CRT.

The circuit board itself is a sea of 74 series TTL, with the exception of the AY-3-1015D DUART.

I have now swabbed the keys and sent off a sample to Ancestry, so they can let me know if there is any trace of Bill Joy. #retrojoke

Looks bad, tastes worse.

There is about 2mm of silicone-y stuff between the front of the CRT proper and another thick piece of glass, which is labelled as implosion protection. This rubber goo has now turned into a breeding ground for hard dry balls which, on a quick search, I see people refer to as cataracts.

In what is probably an ill-advised quest to have a clean screen, I’m pouring acetone onto the goo and scraping it out of the sandwich, *gently*!

A mostly clean CRT, with glass plate on the towel in front, and the remains of silicone gunk. I’m pooped but that’s good progress for today.
@hisdeedsaredust We had them cranked to the full 19200 at uni. We also had 300 baud teletypes in that lab, with a physical bell for all those Ctrl-Gs people would send you.
@hisdeedsaredust I have never seen a clean ADM-3
@lorry The case of this has very few scratches considering that it is only about ten years younger than me. It has probably had an easier life for the last fifteen years, which is how long we’ve been in our current house and I have no recollection of placing it in its large cupboard alongside the (inactive) chimney breast.
@hisdeedsaredust
I can still feel the brightness control knob of the 3a in my fingertips all these decades later! Never saw a blue one, though.
@rotan I couldn’t resist twiddling my knob this morning. 😂
@hisdeedsaredust Nice!! I think that's the model my CS instructor used to access the Uni VAX cluster.
What a beauty
@hisdeedsaredust looks like a terminal, right?
@jhooper Yes, it is a Lear Siegler ADM-3 or 3a from the 1970s. Likely now a doorstop without some work by someone who can replace capacitors, which isn’t something I have the skill or patience for.
@hisdeedsaredust Forty years ago, in the second year lab...
@torgo4012 What’s the betting that it’s at least three decades since this one was turned on? I was at college in the late ’80s and our terminals were mostly later models by Cifer and Wyse. I have never used an ADM 3a.
@hisdeedsaredust We had one at our high school in 1981, hooked up to a PDP 11/03, so by the time I got to uni they were old friends