Author Topic: Dead Nixie tube  (Read 155 times)

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Offline SYJON

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Dead Nixie tube
« on: March 16, 2021, 12:21:24 pm »
Hi! Today I recieved 8 Dolam LC-531 nixies. Unfortunately one of them dont light up at all  :-- . Can anyone suggest how to diagnose/repair this tube? Grid looks like a bit oxidized, I removed some of oxidation from the leads but still no life signs  :(
 

Offline SYJON

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  • Country: pl
Re: Dead Nixie tube
« Reply #1 on: March 16, 2021, 01:15:10 pm »
Update: supplying it with higher voltage makes cathodes glow violet...
 

Offline TheMG

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Re: Dead Nixie tube
« Reply #2 on: March 16, 2021, 01:26:03 pm »
Seal has failed (probably around one of the pins) and air has gotten into it.

Unfortunately, there's nothing you can do about it. It's dead.
 


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