First step (after cleaning the case etc) will be to fix the keyboard.

Many of the keys stay down when pressed, and some appear to not work at all.

Firstly, I removed the keycaps completely, and cleaned the dust and grime away from underneath the keycaps. I could see with the keycaps removed the...

Many years ago, I had an extensive collection of vintage microcomputers. These included what could be considered run-of-the-mill machines like the Sinclair Spectrum, the Acorn BBC Micro and the Amstrad CPC. Also included were some much rarer machines, like an RM 480Z, a BBC Master Compact, and a Mac...