Uploaded July 2025 | Updated September 2026, 2 weeks ago

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Yellow Board – ZX Spectrum 48K Repair & First Look

In this episode of More Fun Fixing It, I take a look at a ZX Spectrum 48K that arrived with a curious label: “Red screen – Yellow board.” And yes, it really is one of the rare yellow substrate Issue 4A boards, complete with blue silkscreen and a touch of mystery.

We’ll walk through the initial inspection—case condition, internal components, and signs of previous work (or lack thereof)—before digging into some diagnostics and gentle troubleshooting. With the board’s unique appearance and completely original RAM setup, it’s an intriguing one to explore.

Will this unusual Spectrum fire up without trouble? Or is the red screen just the start of a deeper issue?

Let’s find out.

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