Home Tubes Asylum

Questions about tubes and gear that glows. FAQ

Re: Plates cherry but only a small spot

24.25.149.128

Heres another area for concern not mentioned very much - the heater voltage. Make sure it is not too much over 6.3V. If it is up at 6.7 or 6.8, I would knock it down with low value power resistors. Many will tell you don't worry - this is uninformed thinking. High heater voltage can cause cherry red spots as well.


This post is made possible by the generous support of people like you and our sponsors:
  The Cable Cooker  


Follow Ups Full Thread
Follow Ups


You can not post to an archived thread.