ZX Spectrum 16/48k
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Schematics (ZX Spectrum 16/48k)
Below are several schematics for the various ZX Spectrum 16/48k models. 📎 Download 📎 ZX Spectrum 16-48k Issue 2.pdf (f...
Model Versions (ZX Spectrum 16/48k)
A great resource for the Spectrum versions and images is https://spectrumforeveryone.com/technical/zx-spectrum-models/ ...
Power Circuit (ZX Spectrum 16/48k)
The ZX Spectrum 16/48k accepts 9V DC positive outer (inverted) power supply. The 9V goes to parts of the system. Expecte...
ULA (ZX Spectrum 16 48k)
The starting point of the system is the ULA chip. If this chip is bad , you will get zero activity on the oscillo...
Z80 CPU (ZX Spectrum 16 48k)
After the ULA is checked and you are seeing something on screen (even it if is messed up), the next thing to confirm i...