openuser
New Head-Fier
- Joined
- Jun 12, 2014
- Posts
- 12
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- 10
Hey guys, a newbie tube roller here.
I just pulled out my stock tubes and look what I found!
The stock tube seems to have black 'flash' or soot below the getter flash point (pic1), burn mark 'ring' around the bottom of the tube (pic2) and some rainbow discolouration of the plate shield (pic3). I think the tubes have less than 200 hours on them. They came with Lyr2, so they must have been NOS.
Are these normal for used tubes?
pic1 - 'flash' or soot below getter flash
pic2 - burn mark, ring around the bottom of the tube
pic3 - rainbow discolouring
(High res: http://jiniec.com/temp/stock1.jpg, http://jiniec.com/temp/stock2.jpg, http://jiniec.com/temp/stock3.jpg)
Compare these with a pair of Used USN-CEP tubes I just received.. These tubes look super clean and exhibit none of the marks on relatively new stock tubes.
Any insights would be greatly appreciated.
Jin
I just pulled out my stock tubes and look what I found!
The stock tube seems to have black 'flash' or soot below the getter flash point (pic1), burn mark 'ring' around the bottom of the tube (pic2) and some rainbow discolouration of the plate shield (pic3). I think the tubes have less than 200 hours on them. They came with Lyr2, so they must have been NOS.
Are these normal for used tubes?
pic1 - 'flash' or soot below getter flash
pic2 - burn mark, ring around the bottom of the tube
pic3 - rainbow discolouring
(High res: http://jiniec.com/temp/stock1.jpg, http://jiniec.com/temp/stock2.jpg, http://jiniec.com/temp/stock3.jpg)
Compare these with a pair of Used USN-CEP tubes I just received.. These tubes look super clean and exhibit none of the marks on relatively new stock tubes.
Any insights would be greatly appreciated.
Jin