My DT25 head has started blowing the tube protection fuse.
This happens shortly after i turn it on.
I have noticed the following before it happens:
1. I turn on the amp.
2. wait for a minute or two.
3. The amp starts making crackeling noice and one of the power tubes starts glowing brightly (like it has a hot spot all orange)
If I don but it in standby at this spot, then the fuse blows.
Do I have a faulty amp or do I just need to replace the power tubes ?
Any help is greatly appreciated.