jazguitardude92
Member
- Joined
- Dec 9, 2007
- Messages
- 9
- Reaction score
- 0
I got my Mark IV on eBay about 8 months ago, and just changed the tubes for the first time a week or two ago. I have noticed that when i turn on my amp there is a crackling noise then it turns into a siren like noise, almost like an ambulance or something. I don't know what is causing this. Could it be that i put in the wrong biased tubes, because i used all JJ's, or could it be because the tubes aren't in all the way? I am new to tubes and this is my first tube amp, so i don't know too much about tube troubles. Also, my Power tubes seem kinda loose compared to my old tubes, but i am pretty sure they are in all the way. Thanks!