Worn or loose KB1 and KB2 keyboard connectors on a ZX Spectrum need replacing. Here is how I removed a super glued KB1 socket safely and fitted a new Molex connector.
A review of a newly manufactured metal faceplate for rubber key ZX Spectrums from RWAP Software, compared with a scratched original and a good one.
Corroded ALPS key contacts and a faulty 8-pin DIN cassette socket brought my Toshiba HX-10 MSX back from the dead.
The safe way to get the metal faceplate off a rubber key ZX Spectrum so you can reach the keyboard membrane, without bending the thin aluminium plate.
A Spectrum+ sold as “working when packed away” had a cracked membrane. Here is how I replaced it with a new three-layer membrane, step by step.