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Welcome Welcome to my redesigned site documenting vintage electronics restoration, vacuum tube audio and radio repair, and the history of technology. Here I share hands‑on projects, repair walkthroughs, historical research, and high‑resolution photos from my bench. Relaunch note I’m rebuilding the site from the ground up to replace ageing, hard‑to‑maintain code with a cleaner, more…
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Retro Chip Tester Professional: A Modern Workbench Essential for Vintage IC Diagnostics The Retro Chip Tester Professional (RCT) is a purpose‑built diagnostic platform designed to evaluate, characterize, and document a wide range of vintage integrated circuits—particularly memory devices from the 1970s and 1980s that modern programmers often fail to recognize. Developed in Germany and offered…
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This is a follow-up to my previous post about repairing a Tektronix CG551AP/CG5001 Calibration Generator. The CG551 had been sitting for many months and I thought it was time to give it a quick check. Shortly after turning on the TM5000 mainframe that I had plugged the CG551 into, I was assaulted by the tell-tale…
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I have added a Resources Page to this website. This page will include but not be limited to: Links to my GPS Reference Status Link to my Fluke 732A Voltage Source Status Link to my local Weather Station (Kildare, Edmonton) Reference Material for Classic Electronics Restoration Safety Information pertaining to Classic Electronics Restoration Data Sheets…
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The Nixie Tester Project by Marcin Saj, comprises an enclosure/power supply/receptacle and a matching family of plug-in socket adapters. There are now over 30 different sockets available to accommodate any nixie tube in existence. I have been working my way through assembling my collection of 20 or so sockets, and realized that documenting the process…
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Our Kenmore Elite 30″ Induction/True Convection range recently developed a problem where the oven would not come to temperature in the expected time, nor would it ever attain the expected temperature. The Model number of the unit is 223 666 003 with a manufacturer number of 970-66003. However this repair applies to any number of…
Shaun Merrigan
Classic Electronic Restoration, Vacuum Tube Audio, Technical History, Photography