Model Versions (ZX Spectrum 128) Updated Mar 15, 2026 · 9 min read · 0 viewing Log in or register to read the full article. Previous Schematics (ZX Spectrum 128) Below are several schematics for the various ZX Spectrum 128 models. ZX Spectrum + 128 All ZX Spectr... Next Power Circuit (ZX Spectrum 128) The ZX Spectrum 128 gets three power rails directly from the external power supply . There are no...