It’s time to build a home for my Apollo era switches and displays, so we make a functional GSE prop in the spirit of the great Apollo ground control panels. Whether we’ll use it in our projects or not remains to be seen... Avery Asset Tags: https: www.avery.com custom-printing labels calculator...

My vintage instruments are behaving oddly. Maybe that’s because we made it past 100,000 subs in the last week of 2020 Thanks to all that pressed the little subscribe button and support the channel Someone noted that videos about the equipment shown would be a good way to explore the channel, so...

A microfilm find from a subscriber may have landed us a cross-reference list for old HP parts. Which would be a key find for vintage HP instruments repair We quickly hack out a microfiche scanner with an Andonstar electronic microscope to find out. Andonstar 207 (no affiliation with the company)...

Blame it on Fran Blanche, I got addicted to these wondrous lighted switches used in the Apollo Mission Control. Who would know that a lowly switch could be so interesting? Here we take a quick look at my growing collection of aptly named Twist-Lite switches and my Roto-Tellite indicator, and at...

This is the opposite of the previous repair-a-thon. A quick video (mostly made out of pictures) of my HP 8447F, a 0.1 to 1300 MHz wideband RF amp which got junked for what turned out to be a very silly failure. Mostly to document this nice instrument, as I could not find any other footage of it on...

The clock modules are repaired Time to don our fancy pants, turn on the HP 9825 calculator, plug in the repaired real time clock, and have fun with an Apollo mission control switch. Fancy pants are here: https: teespring.com magic-repair-pants?pid 1166&cid 104260 I’m told for a while (11 21 2020...

In this episode, we finally achieve 100% repair success. Of course, the last remaining problems are the toughest ones. Music credits: Festive dinner by Pony Music, used under license from Envato Market Our sponsor for PCBs: https: www.pcbway.com Support the team on Patreon: https: www.patreon...

Votes from the previous episodes were a million to 1 that I should repair the remaining interface boards. I was planning to release this on Halloween, but I missed by a day as a whole bunch of very ghostly problems made the repairs more difficult than expected. Our sponsor for PCBs: https: www...

In this marathon episode (no kidding, this part is really a repair-a-thon ), we attempt the repair some of the more difficult boards. And indeed, they are very difficult. Tough problems abound: magic smoke, erratic behaviors, half-functioning processors. Every time we make some progress, we...

In part 2, we look at how the HP Nanoprocessor manipulates the TI clock chip, thanks to our very hairy test setup. Ken Shirriff HP Nanoprocessor articles: http: www.righto.com 2020 09 inside-hp-nanoprocessor-high-speed.html http: www.righto.com 2020 09 hp-nanoprocessor-part-ii-reverse.html ...

We ended up with quite a few dead components in last episode’s repair-a-thon. Would a look inside reveal what they died from? Previous video: https: youtu.be CeXYZKg5jdo Quartz Crystal Oscillator Video: https: youtu.be ad8azNovsF8 Ken Shirriff’s blog: https: righto.com Our sponsor for PCBs...

My previous video on TI clock chips was a (rewarding) detour on the road to repair my HP 98035 clock modules. Now that we have a good clock chip tester, and a few Chinese sourced clock chips that tested all good, can we repair the HP 98035s? Well, not as easily as it might seem. Also, Ken...

In a previous episode, we decapped a Chinese sourced vintage LED watch chip. Surprisingly, it looked like a legit one. But it still did not work in my HP circuit. What about checking it by making a retro LED watch out of it? Head over to Patreon for the better, but demonetized version of this...

We fix a subtle carry problem in our Friden STW-10 mechanical calculator, which gets us into explaining how it works. Our sponsor for PCBs: https: www.pcbway.com Support the team on Patreon: https: www.patreon.com curiousmarc Buy shirts on Teespring: https: teespring.com stores curiousmarcs...

I had the Friden calculator out for a photoshoot, so I took advantage of it to have it do the Friden March, and also 0 divided by 0 while I was at it. Our sponsor for PCBs: https: www.pcbway.com Support the team on Patreon: https: www.patreon.com curiousmarc Buy shirts on Teespring: https...