[GreenKeys] Done lurking; Teletype model 33 KSR/ASR restoration

[Jeff Albrecht]

Here is an, as yet incomplete, list of operational vintage computers in my 28’ cargo trailer I call “The Retro Wagon”

http://retrowagon.org/wiki/index.php/Category:Operational

 

Not sure when / if I’ll get to finishing the altair. I have a 8800b working. I’m working on a S-100 computers / N8VEM IDE/CF v3 board right now, and I’m porting a serial FDC+ server to c# in Mono to run on linux and Mac. Also working on a couple SSM SB1 synthesizer board http://retrowagon.org/wiki/index.php/Solid_State_Music_SB1 check out the Imsai playing Scott Joplin “The Entertainer” all 8 channel/voices. 

-          Jeffa

 

Jeff Albrecht KF7CRU

 

 

From: COURYHOUSE at aol.com [mailto:COURYHOUSE at aol.com] 
Sent: Tuesday, August 4, 2015 9:00 AM
To: jeffa at rodaw.com; greenkeys at mailman.qth.net
Subject: Re: [GreenKeys] Done lurking; Teletype model 33 KSR/ASR restoration

 

-Great  projects   Jeff! good to have another person in AZ interested in the  old  computer stuff

 

-I think there was also a  33 wiring diagrams    set  of  small prints that  would complement   the  manuals/

 

-20 ma  on crt  termainals.   Yes  there were a number for them that offered  this  as an interface method in those 'early days'

 

 

- are  you going to finish building the Altair!?

 

 

Ed Sharpe archivist  for SMECC    <http://www.smecc.org> www.smecc.org 

 

 

 

 

 

 

In a message dated 8/4/2015 8:26:45 A.M. US Mountain Standard Time,  <mailto:jeffa at rodaw.com> jeffa at rodaw.com writes:

Hi,

 

I’ve been reading the list for several weeks. Now that I’ve retrieved my teletype model 33 KSR left behind in storage when I moved from Spokane, Wa. to Mesa, Az. I’m ready to get to work restoring what was once my father’s I/O for an Imsai 8080 S-100 computer. I remember playing startrek(.bas) on it. I also picked up an ASR as I’m really wanting the paper punch/reader lacking in our old KSR. My interest in the Model 33s is for display with my late 70s early 80s computers. I still have Dad’s unfinished Altair kit, I’ve recently rebuilt the power supply in his Imsai and I’ve got my old CompuPro up and running MP/M 8-16.

 

FWIW I recently picked up a Hazeltine 1500 serial terminal. It’s interesting in that it can be configured for current loop. Maybe handy for testing.

 

I’ve got a page started with some pictures and restoration notes. http://retrowagon.org/wiki/index.php/Teletype_Model_33_SN_xyz (Shortened: http://rodaw.me/1dAG4z3 )

 

I have three Teletype technical manuals. I’m currently reading Volume I “General Description and Principles of Operation”

 

Hoping to find something obvious. Otherwise is there anyone in the Phoenix area that might be able to help me repair this? Or does repair work? Or if not local are there any people still doing repair that I could ship or deliver this to?

 

So far they both power up, motors running but in hopefully local mode I get nothing when depressing the keys. The innards don’t appear to be very gummy. The ASR seems newer than the KSR judging by the look of the circuit boards and components. The KSR is missing the modem which I understand would have been located in the base.

 

I’m looking for some 

-          Paper tape for the ASR. 

-          Couple type wheel hammer pads.

-          Cover plate that goes under rotary dial with holes for buttons.

-          Volume control knob.

 

Is this greenkeys list archived and indexed anywhere suitable for searching? I found this http://www.rtty.com/greenkeys.htm but the search cgi is broken.

 

Has anyone written a troubleshooting guide for the Model 33? Good blog post or ??

 

Thanks for reading. 

 

-          jeffa

 

Jeff Albrecht KF7CRU

 



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