deskthority

I was using the term "square badge" as an identifier for the keyboard (out of the 3)

So I took apart the square badge for cleaning. Interestingly enough, the metal plate looks to be the same as the other - no funky color. However, the inner plastic is black, where the other is white.

With any luck the square badge will come apart today for cleaning.

I can definitely feel the weight difference just when carrying them.
I took apart the 401 and cleaned it throughout. It wasn't that bad but it had quite a bit of dust in there and a few scuff marks on the case. It's already back together and the main keyboard for my main desktop, and my Logitech ...

It was the fourth I visited, went to 3 during lunch with no luck and tried this one on the way home on a whim!

Congratulations. Those are beauties! That silver label Model M is particularly nice.

Congratulations, that's excellent! I'm actually still looking for a square-badge M, it's just about the only model of M I don't have yet xD . The old ones are just irresistible :D .

Thanks! This is my first ...

The owner said he was a vintage enthusiast...if he's on here, you don't even know how happy I am.

I am using the top one now, it is my first time using one, and its amazing. Testing them, but so far they all work.

http://s23.postimg.org/4f6p9riqz/IMG_20170106_175601.jpg

https://s28.postimg.org ...

Thanks for the reply, Hub. Trying to track down a retailer that sells springs of the correct size.

I wan't to document the progress...if a mod does not move this thread to the workshop I will start a new thread there.

Hmm, so it may be salvageable? I can give it a try and see what happens. The baking soda was on a write up I saw online before I saw this forum.

Unfortunately the springs are way too far gone - over 50% crumbled into nothingness simply by pressing down on a key.

I am having a HELL of a time ...

So here is a close up of the PCB. you can really see the corrosion. This is after a scrub with baking soda:

Well if this PCB can be repaired it may be worth while to keep it. I do really like the feel of the keys, I got to play around with it before I disassembled it and it was very satisfying.

I do understand what you are saying, but I do not want to replace most of it and keep just the keys unless I ...

Thanks for the reply, I will have a look. Sorry, I made the classic noob mistake of just posting before delving deep into the information here.

I will probably start a thread in the workshop....I just want to post a pic in here of the PCB later tonight to get a better opinion on it's condition.

Awesome, thank you for the info. They are indeed foam and foil - every single foam piece was deteriorated, so I will have to pick up new ones.

Going to start by sanding down the frame and repainting it. I have the switches sitting in some gentle cleaner at home (the rust from the springs was inside ...

It was found in a building that had been abandoned for about 15 years. Luckily it was inside, but doors and windows were open so it was exposed to a few elements (and animals, as you can see in the pic).


I will have to post a more detailed picture of the PCB (after cleaning). basically none of the ...

Nope, I do not have the terminal itself. I could create a custom board, but I do not even know where to start with that...everything that I could build off of that's out there is for modern MX switches.

Here are a few pictures.

https://s28.postimg.org/mfjartzi1/IMG_20170101_211318.jpg

https ...

Hi all,

I recently found an Applied Digital Data Systems Viewpoint terminal keyboard. Unfortunately, the foam and foil switches need replacement foam, and the PCB is totally corroded...after a good cleaning, I do not think it will ever work again.

However, the caps are in ok shape and have an ...