Not sure if the Spectrum in question was necessarily a Spectrum+ -- Sinclair sold kits to upgrade the keyboard: I recall that it was simply a case of unscrewing the motherboard, re-seating it to the new case and soldering the wires from the "reset switch" to each end of a resister.
Sean -- ubuntu-uk@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-uk https://wiki.ubuntu.com/UKTeam/