I have 3 manual typewriters (a cheap brother charger, Olivetti SV something, and a 1920s pain-in-the-neck to use), and 3 electronic typewriters (Brother ML something with single line display, IBM ActionWriter II, IBM Wheelwriter 2000). None of them have needed repairs, but when they do, I'm in trouble.

I constantly use the last one because its simple daisy wheel design and buckling spring keys that feel just like my IBM Model M keyboard (since the latter came from the former), but I have to admit it is a weighty, barely 'portable' typewriter.

One of these days I'm gonna make good on my threat to reverse engineer just enough of the PS2 protocol to mount a raspberry pi zero, some sort of small screen, and some rechargeable batteries inside the upper case margins of this keyboard so it can be a buckling-spring-powered Alphasmart with SD card.