Spectrum Computing

t's pretty common for the classic ZX Spectrum and ZX Spectrum+ to have pretty bad image quality. Most of the time it's not just the RF that is to blame, but it's mostly due to the bad electrolytic capacitors. In this video I diagnose and fix that problem and we learn some more about how the voltage-generation circuit works on the Speccy.
https://youtu.be/rZ641nqT8F0

Great video. My issue 3 is experiencing this visual issue. I haven't completed recapping because I've inadvertently broken it, and I want to debug that first :/
Your video also provides a nice oscilloscope tut for me to confirm this before I swap the caps.