In my hobby restoring tube radios, I have so far resisted getting a tube tester. I believe they are too bulky and expensive for my limited needs. I normally just keep a few (known working) tubes on hand, and swap one in if I suspect a tube has failed. In my current project, I suspected an EL41 output tube to be faulty, but unfortunately did not have any others on hand.
I decided to try and test it, following the method that TRX Bench presented in a similar video. His video is here, and I highly recommend you see it.
   • #40 Electronic Tutorial: How to test ...  
Hope this helps you, but remember that high voltages are dangerous!

You can now support the channel:
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_____HUNDREDS OF OTHER VIDEOS TO CHOOSE FROM____
DIY TEST GEAR: The title says it all:
   • Zener Diode Tester - Part 1. The build.  

RESTORATION BUILDING BLOCKS: A series of videos showing detailed steps used the restoration process of tube equipment:
   • How to safely check the Power Transfo...  

HowTo's: Various videos on some simple techniques and projects:
   • Extend tube radio FM band above 100MH...  

See also playlists on some other completed restoration projects.

PHILIPS BX750A:
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TELEFUNKEN OPUS 2114:
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SABA UW-175-Z 3D:
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GRUNDIG 1070:
   • Grundig 1070 tube radio restoration -...  

SCHAUB-LORENZ GOLDY 58 type 3020:
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BUSH VHF64:
   • Bush VHF64 tube radio restoration - P...  

GRUNDIG 3060A:
   • Grundig 3060a tube radio restoration ...  

TELEFUNKEN OPERETTE 8:
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GRAETZ SUPER 171W:
   • Graetz Super 171W tube radio restorat...  

LOEWE-OPTA MAGNET 3737W:
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BRAUN ATELIER 3:
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LOEWE-OPTA TRUXA STEREO 4741W:
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GRAETZ COMEDIA 616:
   • Graetz Comedia 616 tube radio restora...  

SABA FREIBURG W2:
   • Saba Freiburg W2 (WII) restoration  

GRAETZ MUSICA 4R417:
   • Graetz Musica 4R417 restoration  


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#tuberadios #radiorestoration