I recently bought this keyboard from a young lad for around $16. The PCB suggests that it is a Datacomp DK81-50B.
The layout can be called a 75% by today's standards. It uses Alps SKFR Black (SKFRAC) switches for most of the keys, the exceptions being NumLock, ScrollLock and CapsLock keys which use Alps SKFR Yellow (SKFRAD) switches. I didn't manage to find anything about this keyboard on the Internet (at least nothing that goes by the name Datacomp DFK81-50B).
It's in quite a rough state (noticeable yellowing, a missing keycap, the cable has been tampered with, none of the screws seem to belong to the keyboard) being around 33-34 years old. The switches feel quite scratchy and pingy which is not surprizing for a linear type of switch this old.
I would like to know if Alps SKFR's can be opened up without desoldering them akin to SKCM/SKCL switches (I see that they look quite different from their older brothers but there might be a possibility). There is no mounting plate so the switches are mounted directly to the PCB with some sort of a protective plastic(?) sheet that is glued to the bottom of said PCB.
The biggest problem of the keyboard is switch chatter. It affects almost all the switches. That is why I want to give the switches some proper maintenance. Some grease might make this keyboard feel and sound much better. Unfortunately I have no proper equipment to record a good sound test, though you can check out Chyrosran's typing demo of these switches.
The keyboard without its top plate
Intel Controller
The PCB itself
Keycaps taken off
Stabilized keys
What do you people think of this acquisition?
