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Home » IBM » Electronic Typewriter 75 » 1980 #29-6713-11-3075069
1980 IBM Electronic Typewriter 75 Serial # 29-6713-11-3075069 1980 IBM Electronic Typewriter 75 typewriter, Serial # 29-6713-11-3075069 Erik Bruchez's 1980 IBM Electronic Typewriter 75 typewriter. 2023-04-02 From the Virtual Typewriter Collection of Erik Bruchez: 1980 IBM Electronic Typewriter 75 Serial # 29-6713-11-3075069 And yet another premiere on TWDB!

This machine doesn't work. The AC motor turns on and the machine makes a rattling noise.

UPDATE 2022-10-24: Opened the machine to measure the power supply and blew a diode. Noticed that the "memory protection" batteries leaked and damaged the PCB underneath them. That's not a big deal as that's an optional feature. However, the machine is working even less now, given the new power supply damage. See linked photo albums for more.

I was surprised to see that the electronics are, again, entirely IBM proprietary, even though IBM officially has, now, a "processor board", a "driver board", and a "memory expansion board" ("+8K"), and the electronics are much smaller than with the earlier Mag Card/Memory Typewriter machines.

1980 IBM Electronic Typewriter 75 #29-6713-11-3075069

Status: My Collection
Hunter: Erik Bruchez (ebruchez)
Created: 02-04-2021 at 04:53PM
Last Edit: 04-02-2023 at 10:31AM


Description:

And yet another premiere on TWDB!

This machine doesn't work. The AC motor turns on and the machine makes a rattling noise.

UPDATE 2022-10-24: Opened the machine to measure the power supply and blew a diode. Noticed that the "memory protection" batteries leaked and damaged the PCB underneath them. That's not a big deal as that's an optional feature. However, the machine is working even less now, given the new power supply damage. See linked photo albums for more.

I was surprised to see that the electronics are, again, entirely IBM proprietary, even though IBM officially has, now, a "processor board", a "driver board", and a "memory expansion board" ("+8K"), and the electronics are much smaller than with the earlier Mag Card/Memory Typewriter machines.

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Hunter: Erik Bruchez (ebruchez)

Erik Bruchez's Typewriter Galleries [ My Collection ] [ My Sightings ]

Status: Typewriter Hunter
Points: 10012

I started collecting my first pre-WW2 standard typewriters in 2017. Since then I have added a few machines to my collection, which now ranges from the 1890s to the 1980s. As of 2020, I have more big standard (desktop) typewriters than portables, and a few standard electrics.



RESEARCH NOTE: When researching the IBM Electronic Typewriter 75 on a computer with lots of screen real estate, you may find that launching the IBM Serial Number page and the IBM Electronic Typewriter 75 By Model/Year/Serial page in new browser windows can give you interesting perspectives on changes throughout the model series.