For those who want to keep their CoCo looking exactly as it did, we present KeyFix.
This circuit board (keyboard and parts NOT included) replaces the metal plate and Mylar sheet with individual switches and a wired connection. Looks and feels like the original, except for the 'CoCo2 mode' switch. This converts the ALT/CTRL keys to UP/DWN arrow for older games, and it's reachable through the cooling vents on the bottom. So no mods, just replace parts.
This listing is for the bare board, you will have to source and install your own switches. Check our blog section for all the details.