Mitsumi rubber dome keycaps A2000,A3000,A4000

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gifair

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tl;dr: Looking for: left alt, f1, f6, esc - ruber dome type key-caps

I have managed to get a keyboard for my a4000 (yay).. Unfortunetly the keyboard had a few broken keys, apart from this the keyboard is in very good condition (very little yellowing).

I don't know the full history of this keyboard but my guess is that someone tried to remove the keys (maybe to clean the keyboard) without a keypuller and managed to break some of the keys.

Hence I'm looking for a few replacement keycaps - however upon closer investegation I have found that they keyboard is not the normal mitsumi spring-loaded keyboard, instead it's the "earlier" rubber dome/cup mitsumi type.

keyboard_3b.jpg
Above is a key shown next to a (very yellowed) key that I pulled from an A500 keyboard

What is special about these key-caps is that the center-hole in the stub on the underside of the keyboard is larger, hence the wall-thickness is less than the spring supported key type. This is probably a contributing reason as to why the keycaps broke in the first place.

keyboard_4b.jpg
(it is the type on the left I am looking for)

The more robust type (the one I pulled from the A500 keyboard) are able to fit and work with they keyboard - however since the stub is also slightly higher the result is that they are slightly higher than the other keys (not a great solution).


The keys I am looking for are:


  • Left Alt
  • F1
  • F6
  • ESC

And 1 spare rubber dome


Additional information - just for fun

It appears that they keyboard is originally intended for the A3000
keyboard_1b.jpg

However the inside membrane indicates that it's originally build for the A2000
keyboard_2b.jpg

The keyboard has a german layout - I suspect that Commodore Germany had a bunch of spare A2000 keyboards which they transplanted into A3000 keyboard cases to fill a supply shortage of German layout A3000 keyboards at some point (but this is just speculation).

Also if someone have a danish keyboard of this type and would rather have germay layout then I am interested in trading keycaps to make this happen.
 
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