ZX Spectrum 48K
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An MFS Quicktip: how to check the 7805 regulator in a ZX Spectrum 48K with a cheap multimeter, from the PSU plug to the 5V output pin.
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A quick no-solder composite video mod for the ZX Spectrum 48K. Bypass the RF modulator with cutters and a short wire, then plug into RCA composite or SCART.
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Two quick ZX Spectrum fixes that never made it into a video: a Ram Turbo joystick interface with bad solder joints, and a 48K board missing its Z80.
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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.
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The manual, software and demo tape audio for the RAM Music Machine, the MIDI interface for the 48K ZX Spectrum, free to download.