Tubes Asylum

The blue that you see IN the tube...

74.243.247.136

In Reply to: RE: cleaning tubes posted by rmilewsk on July 01, 2009 at 21:26:05

...is just that INSIDE the tube.
It is the residual gases that are ionizing because of the cathode emissions and the plate voltage.
You cannot clean this !
A small amount is normal in power tubes when it is seen. If there is blue inside the elements the tube may be getting gassy and not operate properly.
Hope this helps
Ed

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RE: The blue that you see IN the tube... - Jim McShane 12:24:56 07/03/09 (0)

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