TX-500 "Expansion Pack" maintenance...and a 2nd one

[@ianlisk]

Don't know how I got here but your DIY projects look like mine! You can tell a lot about an engineer by looking at his handy work. +1 sub, I'll definitely watch more off work. Hello from a semiconductor plant in AZ USA 👋 🌵

[@CrazyChekov]

thank you! greetings back from Vienna, Austria!