Musicman
Well-known member
- Joined
- Feb 27, 2002
- Messages
- 1,909
This may seem really stupid but I don't know much about tubes and have a question. I recently looked in the back of my JCM 800 while it was on which I never do. I noticed the EL34 tube closest to the smaller tubes 12ax7? was glowing red along with the smaller tubes. The other EL34 was not glowing at all. I took out the EL34 that was glowing out and the top was white and crusty while the other one looked like mirrored silver. I swapped them and the tube that wasn't glowing did and vise versa. Can someone tell me if this is normal? I've moved a couple times recently and I bought the tubes new not long ago and had the amp checked before the moves. I think it sounds the same as it did. Maybe it's nothing but I'm curious to know if it's normal. Thanks for any help you can provide.:2cool