[GreenKeys] Teletype ASR model 33 restoration

[Henning Treumann]

Hello Ben,

this is the European version, mainly used for CNC tooling machines.

Join telexforum.de and have a look at this thread:
https://telexforum.de/viewtopic.php?t=1785

Teleprint 390 is a "repacked" 33ASR in another enclosure with similar
control electronics
like yours.
They were sold in Europe both in original cover as well in a more
rugged one as Teleprint 390.

Henning
www.i-telex.net
www.telexforum.de

Am Di., 4. Apr. 2023 um 16:25 Uhr schrieb Benoit Aveline
<avelinebenoit at gmail.com>:
>
> Hi,
>
> Recently I recovered 2 model 33 teletypes from 1976. Both are the same,
> and both haven't been plugged since 30+ years. The old man who gave them
> to me got them at his factory when they decommissioned those. His plan
> was to plug them to each other in 2 different rooms for his kids to play
> with them. He never did.
> So, having both, I started to restore one, keeping the other one for
> spare parts.
> Here is a picture of one before I start cleaning:
>
> https://imgbb.com/D7k8By0
>
> They have been modified by a retailer for France use (220V 50Hz).
> So I cleaned one, de-greased and re-greased most of it, changed a broken
> ball bearing shaft (taken from the other one), checked the relays were
> not stuck (with a 12V lab psu) and replaced the rubber hammer on the
> print head with a rubber tube (the 40yo rubber hammer was turning into
> some sticky nasty gum).
> I'm close to make it work locally. I still have to fine tune some
> settings and make the Carriage Return work, but the four blocks work
> (just with a very low reliability on decoding characters).
> My intent was to use Mike's "current loop to rs232" adapter (
> https://deramp.com/tty_adapter.html ), but the P2 connector looks a
> little bit different. Its pin 3 isn't wired (which is where the adapter
> gets power from).
>
> https://ibb.co/YTMGV4n
>
> https://ibb.co/TRKfJ3z
>
> https://ibb.co/fF83Yxd
>
> So, the UCC neither a UCC-6 or a telex. I don't even know if P2
> connector is wired as the one on UCC-6.
>
> Has anyone seen that kind of UCC ? Does anyone has some information or
> documentation about it ?
>
> And does anyone know about decoding reliability or carriage return issue
> ? I already ordered new capacitors to replace all of them, as it can't hurt.
>
> Thank you
>
> Ben
>
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