The return of #tuesdaytooling and the Commodore Repair Toolkit is all the reference material that you need to fix 8-bit Commodore machines such as the #commodore64 #vic20 and the #commodore128. Pinouts, oscilloscope waveforms, component lists. It is all there for FREE!
This free tool works on Windows and with a little Wine magic, it works on Linux too!
https://bigl.es/c64-toolkit/