2nd hand A1200, Amiga keys not working

[Zac67]

I've once repaired a MS Natural Keyboard  :-P because it wasn't made any more. Some Coke had been spilled a couple of weeks before, and the acid ate away some of the traces on the foil.

After cleaning the mess I used some conductive silver paint ('Leitsilber') to repaint ~10 cm of the traces with a very fine brush. It's been 2-3 years since and the keyboard still works. :-D
I wouldn't do it again though... :crazy:

PS: Obviously the keyboard needs to be taken apart to get at the traces. Most plastic pieces can be cleaned in warm water, but don't let any of that get to the key springs. Relubricate after cleaning.

[Zac67]

Yeah, looks like a pretty good job - I didn't know about graphite spray. There's not a high probability of having worn out Amiga Keys though, maybe there's just sugar/dirt on the contacts.
Pouring alcohol through the keyboard is a not-so-good idea: it'll probably leave the dirt inside (just relocate it), is very hard to dry thoroughly and will remove some of the lubrication, so keys may go very hard afterwards. Some of the dirt that's always inside keyboards might get shifted to somewhere where it does cause bad contacts.

If you're a good type writer, the Natural Keyboards are pretty good as you don't strain your wrists, they're perfectly straight. I don't like them since I don't do 10 finger typing, but a nice colleague of mine does. ;-)