ZX Spectrum 48k Hot Chip Memory Fail

The latest upload from More Fun Fixing It focuses on a Sinclair ZX Spectrum Issue 6A that displays abnormal screen colors. The creator begins by performing standard multimeter and circuit diagnostics to isolate the problem.

The repair also includes locating a faulty 100 µF capacitor, replacing a broken speaker, and attempting to restore a non-responsive keyboard membrane. Each step is documented to illustrate the troubleshooting process for retro enthusiasts.

Throughout the repair, the creator demonstrates the use of both traditional testing tools and modern imaging equipment to address component failures. The video serves as a practical guide for restoring functionality to classic Sinclair machines.

Viewers can see the challenges of working with aging parts and the importance of careful diagnostics when tackling similar retro hardware issues. The walkthrough also highlights the value of preserving vintage computing through hands-on maintenance.

Watch the full repair walkthrough now: