So summer is over and I'm back to my other expensive hobby. I'm trying desperately to revive this II+ foil tab keyboard I have, but seem to be getting nowhere. I think what I am lacking is an understanding in the principle of the thing, how it's supposed to work, how different characters are generated, etc.
For example, my 1 and 2 keys don't work at all. Superficially, comparing them to the nearby working 6 key, they seem fine -- seem to have the right amount of travel and the two little 'fork tines' beside 1 make contact with the PCB. Further, the PCB I know works because I've tested it without the keys in place.
Sometimes 1 works and it'll generate a minus sign. Sometimes you hit 4 and it generates 4545 or something like that.
Are there any good guides out there for these particular keyboards? I'm thinking it may be at the point now where I need to just write it off because there's just too much wrong with the tabs.