Resurrecting a ZX Spectrum 128K+ "Toastrack": A Retro Computing Restoration

The author reminisces about his childhood with the Sinclair ZX Spectrum 48K and details the restoration of a rare ZX Spectrum 128K+ "Toastrack". This vintage machine suffered from various issues, including unreliable power, poor video quality, and a failing keyboard. The author meticulously addressed these problems by replacing the 7805 voltage regulator with a more efficient DC-DC Buck converter, cleaning the edge connector, adding video filters, and replacing the worn-out keyboard membrane. Audio improvements were also made. Finally, using an RGB2HDMI converter, the author achieved crisp HDMI output, breathing new life into the old machine and allowing him to play classic games once more.
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