Hjalfi fixes a ZX Spectrum

In which yr hmbl svt replaces a bunch of 36-year-old capacitors in a 36-year-old ZX Spectrum, as well as the regulator and keyboard membrane, and then realises that he doesn't know how to work his own oscilloscope. This is my first try at this sort of thing, and the focus, video quality and audio quality aren't so hot. Also I pressed the wrong button and lost some footage (but it wasn't exciting footage).