+1 for Adrian's Digital Basement.
Has just the right blend of amateurish "looks like he kind of knows what his doing but frequently makes schoolboy errors, but clearly knows about some things, just not sure what exactly", hobbyish retro dismantling/rebuilds/repairs, often of stuff which has literally been left out in fields for years. It his is enthusiasm which carry's the channel, he keeps all his mistakes in, but it emphasises a feeling of honesty and genuine enjoyment of just tinkering with old computer gear. I started with his Amiga stuff but have since subbed and just watch all of his stuff as it comes now.