On Thu, Jul 6, 2023, 8:41 PM Mike Stein via cctalk <cctalk@classiccmp.org>
wrote:

> Conrac mainly made CRT monitor assemblies, so the actual terminal was quite
> possibly made by someone else.
>
> It looks vaguely familiar; I'm surprised no one's recognized it.
>

Yea. Looks vaguely SABER like, but my only experience with them is airline
tickets an eon ago... but the screen looks all wrong...

Warner

m
>
> On Thu, Jul 6, 2023 at 6:13 PM Brad H via cctalk <cctalk@classiccmp.org>
> wrote:
>
> > Thanks Rod!
> >
> > I discovered an immediate problem I hadn't caught before.. two of the
> > trimmer resistors had actually been broken right off two of their legs..
> so
> > that may account for strange/missing voltages.   They are a CONRAC part
> > 928237.  The CRT is CONRAC too, but I still don't think this is a CONRAC
> > terminal.  Anyway, I only found one source for the exact resistor, an
> > aerospace company, and they want $80 per unit (I think they just want me
> to
> > go away).
> >
> > So far in testing I haven't found any shorts.  My main worry is the PSU
> > sending incorrect voltages to wrong place.  In addition to the broken
> > resistors I also discovered some broken solder joints on the PSU PCB..
> > those at least are repaired.  I'm trying to figure out the resistance the
> > two resistors were set to so I can put a replacement in with same,
> > hopefully that gets me close to what should be there.
> >
> > Brad
> >
> > -----Original Message-----
> > From: Rod Smallwood via cctalk <cctalk@classiccmp.org>
> > Sent: Wednesday, July 5, 2023 8:48 AM
> > To: Douglas Taylor via cctalk <cctalk@classiccmp.org>
> > Cc: Rod Smallwood <rodsmallwoo...@btinternet.com>
> > Subject: [cctalk] Re: 1974 No Name Terminal
> >
> > I worked on VDU's as an engineer in the UK before joining DEC to sell
> > volume VT100's in 1975
> >
> > There's a mention of block on one of the cards so a block mode terminal.
> >
> > That means enter data and press a key to send the lot.
> >
> > The card cage could mean its emulating something.
> >
> > I'd test as many capacitors as possible. PSU first and replace as
> required.
> >
> > Run PSU and check voltages.
> >
> >   Check each board for power rail to ground shorts.
> >
> >   If ok give each board +5v on its own and see if the TTL is alive.
> >
> > If theres a clock gen start there (look for a crystal can)
> >
> >   Loads of fans might indicate an industrial environment
> >
> >    At this age some TTL will have failed plus capacitors.
> >
> >   Rod Smallwood
> >
> >
> > On 05/07/2023 16:28, Douglas Taylor via cctalk wrote:
> > > At first glance it reminded me of the Hazeltine 1000, I owned one in
> > > the early 1980's.  Brutally simple terminals, I remember getting a ROM
> > > from Jameco which allowed the terminal to display lowercase letters.
> > > Pure luxury.
> > > Doug
> > >
> > > On 7/4/2023 6:57 PM, Brad H via cctalk wrote:
> > >> Hi there - not sure how much overlap there is with vcfed's forum, but
> > >> thought I would reach out here in case.  I have a terminal from 1974
> > >> (based on date codes I've found on the motherboard).  I'm unable to
> > >> determine manufacturer and that would be handy for diagnostic
> > >> purposes. The terminal casing is made out of foam, and although there
> > >> are some serial numbers stamped around, nothing really lines up.  The
> > >> fans inside have zero dust or dirt, so I'm thinking this may not have
> > >> seen much use, or may be a prototype or pilot for something.  It does
> > >> have RS232 capability. Interestingly the screen is set down below the
> > >> keyboard so that only half of it is visible.
> > >>
> > >>
> > >> My main issue right now is the PSU - I am trying to determine if I'm
> > >> safe to attempt powering up the board (the PSU so far seems to be ok,
> > >> although some voltages on a couple of pins are mysterious).
> > >>
> > >>
> > >> Anyway, on the extremely off chance anyone has ever seen one of these
> > >> or something like it.. any tips would be appreciated. If I can find a
> > >> manual I'll feel a lot safer about turning it on.
> > >>
> > >>
> > >> Some pics here:
> > >> https://drive.google.com/drive/folders/1-2uEFbi3OKBYr06y6yHnygDiLMtw2
> > >> Qkj?usp
> > >>
> > >> =sharing
> > >>
> > >>
> > >> Brad
> > >>
> > >> b...@techtimetraveller.com
> > >>
> > >>
> > >
> >
> >
>

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