Does anybody know what could have happend to a *new in box* tube to cause it to not light up at all?
On Wednesday, 5 September 2012 18:57:52 UTC+1, kay486 wrote: > > > <https://lh5.googleusercontent.com/-bBKS-KcSzyo/UEeSImQ3w2I/AAAAAAAAABM/RC1qFuR9VDY/s1600/05092012272.jpg> > > > <https://lh5.googleusercontent.com/-LuZ_6U4NvDI/UEeSRLSZntI/AAAAAAAAABU/Te3HtRTp2uM/s1600/05092012270.jpg> > > > <https://lh6.googleusercontent.com/-DD9pSLuOZ08/UEeR_EQCR3I/AAAAAAAAABE/e7c35AB6gmU/s1600/05092012269.jpg> > Hi there, i have just bought few new in box Z560M tubes, and i was quite > surprised when i found one completely coated tube. I havent seen any Z560M > by RTF that would have been completely coated, only those that are coated > on top. The coating is much lighter, and the cathodes are little bit > thiner, and one interesting thing, it has the *4* cathode bigger wider than > the rest of the numbers, i never seen it on RTF tube before ( ZM1020 by > Tesla have that too, and many more tubes im sure). Ive also noticed that > the envelope is more sperical than the other tubes. There is also one (the > only one i have) Z5600M i have from before, for comparison, it seems to > have the same envelope, but the numbers are thick as with the common > versions of Z560M, and it has the normal *4*. Other thing i found was that > both Z5600M and the fully coated Z560M dont have the round getter anywhere > inside them. > But why im posting all this, *im not able to light up the fully coated > Z560M* (and yet the half coated tubes work fine, so does the Z5600M). I > cant see any crack in the envelope whatsoever, nor any signs of burned > wires inside. The tube looks 100% fine, i just cant light it up! I havent > tried to run it on higher voltage than 180V though. Does anybody know what > could be the problem? The only thing i though of was some long time > outgasing due to the lack of the getter, but i dont think thats the problem > since the Z5600M works just fine without it. Any information about the tube > would be highly appreciated. > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to [email protected]. To unsubscribe from this group, send email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msg/neonixie-l/-/AFdwicyqkr4J. For more options, visit https://groups.google.com/groups/opt_out.
