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Sinclair ZX Spectrum 128 Troubleshooting Guide: Revision history

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27 September 2026

  • curprev 09:2909:29, 27 September 2026 Josh talk contribs 17,830 bytes +769 +12 V rail feeds the MC1488 RS-232 driver and keypad, not the video stage (Service Manual s1.10); European sound carrier is 5.5 MHz +/-2 kHz, not 5.5-5.9 MHz; manual now hosted and cited undo

9 August 2026

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