I recently had the same failure experience with a IN-18 in a Blue Dream.  The 
digits also faded over a period of a little less than a week until no digits 
worked.  I posted my experience and the general conclusion was that the way the 
digits faded was indicative of a failed pin seal.   
Are your tubes all from a particular date code range?  It really doesn't sound 
like a clock failure due to the equal failure of all digits.  What tubes and 
clock do you have? 
Jeff 

-------- Original message --------
From: Brando L <[email protected]> 
Date: 8/15/2016  8:33 PM  (GMT-07:00) 
To: neonixie-l <[email protected]> 
Subject: [neonixie-l] One slot on my clock keeps burning out tubes, while the 
others have been good for years. Thoughts? 


Had a question for you guys, would be curious to see if anyone has seen this 
too. 
I've had a nixie tube clock for 3+ years and for some reason I've only had to 
replace the tube in one of the digits, but I've replaced it 2 times and now 
about to do it again for the third. Since this is starting to look like a 
pattern and my other tubes have had no issues, I'm thinking it's not the tubes 
fault. It's the hour position on the clock where X is: HX:MM:SS. When the tube 
goes, it's like a 1-2 week death; slowly bits of the digits aren't visible, and 
then less and less until it is digit less. 
What's the best way to diagnose? 
Much Appreciated. 



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