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Radio Shacks¹ used to have a tube tester machine in them.² I was always impressed that there was such a finite universe of tubes that a single machine could tes
by dhosek 2y ago
Radio Shacks¹ used to have a tube tester machine in them.² I was always impressed that there was such a finite universe of tubes that a single machine could test all of them.
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1. For the kids, this was a store that sold various electric gizmos including radios and circuit components, then later computer and televisions.
2. I think they may have also been present in hardware stores as well.
- euroderf 2y agoThere was a tube tester in our town's main pharmacy. So in principle you could pull the main tubes from (say) your TV and have at it.
- quercusa 2y agoThere's a HeathKit one up on Ebay now: 'Heathkit TC-3 Tube Tester'
- themadturk 2y agoI remember tube testers at grocery stores when I was a kid. I'd go with my dad to test tubes from our TV set, and buy replacements for burned out ones.