The CPC keyboards contain fragile keyboard membranes, which have a rather low lifetime of maybe 5-10 years.
The east-german CPC clone [[KC Compact Computer]] contains a more robust real keyboard circuit board, which should give it an infinite lifetime.
== Repair ==
=== Rewired PC Keyboards ===
Cut all wires on the circuit board, and rewire them as in the CPCs keyboard matrix. Sounds simple, but it's quite a lot of work. Of course it works only with keyboards that do have a real circuit board (eg. many inexpensive noname keyboards use boards), not with membrane based keyboards (eg. some of the infamous overpriced Cherry keyboards).
== Pictures ==