I know it's a little thing for everyone here but I actually never opened up a keyboard before. Bought a mimic cable to swap into my Filco MJ2 since i really love his cables. Turns out it's a pretty easy thing to do. I thought I'd document this for giggles and so I'd remember. And to just show a few pics for anyone curious.
A Mimic Cable - BSpec Color So the Filco MJ2 doesn't have a detachable cable so you have to open the case up. I've never opened a keyboard up before and I was a little leery of potentially destroying my expensive baby. But like I said before, it was pretty easy.
Backside of my Filco First you remove the three screws. The two near the feet and the one that's hidden by the "Do Not Remove" sticker.
Close up of the Screws Then you need to take a credit card or something thing to pop off the snap fits in the front edge. There should be four of them.
Close up of the Front Edge Then you remove the case top and bottom to reveal the naked glory of the PCB.
Pop off the Filco cable plug (see top right in the first picture, the plug is the little white bit) and then pop Mimic's cable in. He said that it might be a little wonky so if it doesn't work when you test it, just unplug and replug the cable a few times. Mine worked on the first shot. Then you just reverse the process, reassemble, and enjoy.
The colors are mismatched for now but I'm going to swap in something else soon so it all matches.
Pro-Tip from Glissant:
I would only add one little thing about the Filco connector. Don't pull on it when disconnecting it, just use something to push the connector out from the top slits on the connector.