Spec, Tech, Pain in the Neck

After many Spectrum-less years I've just found myself to be the proud owner of 2x Speccys, both 48k Plus models (no rubber keys for me) one boxed and apparently in good working order apart from the keyboard and the other untested.

When they arrived, I quickly realised that I had 2x half working Spectrums, one with a working keyboard and a horrendous video fault, and one with a dodgy keyboard that seemed to work ok. That is, until the one with the dodgy keyboard got warm after a while of being switched on - then I had 2x Spectrums with horrendous video faults...