Wakester
Re Member
Good aftermorning amplified officianado's.
I have started to notice my Sonzera 20 is becoming more and more noisy on the clean channel. The noise is a 60 cycle hum combined with the crackle of an open spark somewhere nearby. The dirty side sounds as it should with only a slight background hiss.
I re-tubed this amp shortly after getting it, and it was perfectly fine until recently when I thought about trading it in for a newer head and cab set. The store I took it to said it was too noisy and it may be the tubes and or re-bias. So, I ordered all new tubes and re-tubed it again. No change, the clean side still has the humbuzz and there was no change to the otherside either. I checked the bias and dropped it from 38 to 30.5 between the 2 sides.
Now I am stuck, because I really only have room for 1 amp in my office, and need the Sonzera to be 100% to either keep it or trade it.
Any thoughts or advice as to what could be causing the noisy channel, and how to fix it?
I have started to notice my Sonzera 20 is becoming more and more noisy on the clean channel. The noise is a 60 cycle hum combined with the crackle of an open spark somewhere nearby. The dirty side sounds as it should with only a slight background hiss.
I re-tubed this amp shortly after getting it, and it was perfectly fine until recently when I thought about trading it in for a newer head and cab set. The store I took it to said it was too noisy and it may be the tubes and or re-bias. So, I ordered all new tubes and re-tubed it again. No change, the clean side still has the humbuzz and there was no change to the otherside either. I checked the bias and dropped it from 38 to 30.5 between the 2 sides.
Now I am stuck, because I really only have room for 1 amp in my office, and need the Sonzera to be 100% to either keep it or trade it.
Any thoughts or advice as to what could be causing the noisy channel, and how to fix it?