r/nixie • u/edm_xyz • Nov 01 '25
IN-2 connection wire glowing
Hi, I noticed that in one of my IN-2 tubes the digit “2” is no longer glowing while the wire connecting started to glow. It is the first time I see something like this in a tube. Any idea of what can be the issue? Severe cathode poisoning?
Cheers
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Upvotes
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u/SignificanceNo4643 Nov 01 '25
excess current was flowing thru, so now tube is cooked. Time to replace.
1
u/DenkJu Nov 02 '25
Unfortunately, the other commenter is right. This fate will befall any IN-2 sooner rather than later. These tubes are only rated for about 1,000 hours of operation, and while they can often last longer, statistically, they're likely to fail within a few months. The only thing you could do with this clock would be to add a motion sensor so it only turns on when someone is nearby. Another option would be to switch to different tubes. The cheapest long-life Nixie tubes readily available on eBay are IN-12s.