Fixing my SGI Indigo PEC4044B Power Supply

A full recap of the unobtainable ITT PowerSystems PEC4044B power supply from an SGI Indigo R4400, and the failed zener diode (CR111) that turned out to be the only broken part in it.

Bench Tools for Vintage Computer Repair

What you actually need on the bench to bring an old computer back to life, and a rough order to acquire it in. From a soldering iron and braid through a logic analyzer and a known-good test rig.

Not a Gamer Review: Two Legit Commodore 64s and a Linux Box Pretending

An original 1983 breadbin against the new FPGA-based Commodore 64 Ultimate — head to head on the same monitor, the same floppy, the same code. Plus TheC64, which is none of these things.

Retrobright: Science and Philosophy

Understanding the chemistry of yellowed plastic and the case for restoration