repairing Spectrum membranes.
RWAP's excellent replacement membranes. The process is fairly simple, with a good hint from the instructions that came with the membrane is to mark the screws that are fitted, as there are several unused holes.
The LEDs on the QL are wired unusually, six wires from the top of the case have bare tinned ends and are individually plugged into a socket on the board which clips down to hold them in place. Was a two part connector so expensive?
I'm now using slightly different membrane connectors from those shown above, the new ones slide in from the side.
QL USB keyboard kit from my Tindie store.
Tune in tomorrow to open another window on the Advent Calendar of USB keyboards.