Home Tubes Asylum

Questions about tubes and gear that glows. FAQ

Black Spots On Tubes?

24.76.225.146

I recently rolled the cd stage tube for my pre-amp and noticed that the tube I removed had two small black ("burn-like") spots on the top of the tube. Has anyone ever encountered this and if so, is it a sign of danger?


This post is made possible by the generous support of people like you and our sponsors:
  McShane Design  


Topic - Black Spots On Tubes? - Peter 21:44:16 02/14/02 (2)


You can not post to an archived thread.