Damaged A2/3/4000 keyboard

[Kronos]

Easy way :

Get a soft lead-pencil (or whatever a "Bleistift" is in english) and
srub it over the contacts on the PCB.

If you don't find a PCB, but one of those foils:
Get an A1200-kbd as spare (used or from Vesalia).

Harder way (if the key is the prob not the pad):
Find a fitting "inside-part" of a key (the tiny plastic with the small
contact-pad).This can either by ripped out of another Ami-KBD or be
found in some Mitsumi/Logitech-KBD. Not for the shaky-handed  ;-)

[Kronos]

@this_pop_girl

Nah, those (and space) are the most used keys,so they are the ones that
will wear out 1st.

I would guess that the seller used the enter-key as a replacement for
the long-dead return, till that also gave up  :-(

[Kronos]

@Bodie_Cl5

There are basicly 2 kinds of Amiga-KBDs (not counting those on A1000,A2000A and A600).

1)Contacts and KBD-CPU on one PCB, those came with the A2000, A3000 and early A4000.
There is also a version with 2 LEDs which was used in A500(+), another cheap source
for spares.

2) Contact-foils,ending in  a ~20 "pin" foil-plug. Those came with the A1200 and newer
A4000 (only Escom ?). The KBD-CPU is either on the mobo (A1200) or on a small
PCB inside the KBD (A4000). These foils can be changed, but the A1200-version
has a longer "plug", so that might proove a a bit harder.

I also heard of some A500s having a foil-KBD, with the CPU-PCB.