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Re: WE300B glow and noise

Jaytea, hi. Sounds like classic gassy tube syndrome. Normal blue glow hugs the inner glass surface. Three dimensional glowing as you describe moving in a sweeping motion in the interior is as far from normal as you can get. Don't run these tubes. Return them as defective. How tube savvy is your dealer? What you have been observing is a severe warning sign. The next thing that will happen is the ionization of gas on the interior will continue to the point where thermal runaway can take place and lead to catastrophic failure of the tube. This could take out an output transformer. In what amp are your WE 300B?


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