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I have a reissue Bluesbreaker combo that has always had some pretty annoying hum / buzz issues, and I'm hoping to cut this down if at all possible. I'm just wondering if anyone has some initial suggestions of things to look at. I have a little experience building stuff, but I'm really inexperienced when it comes to troubleshooting and modifying circuits.
A few specifics: buzzing is lowest when both volume pots are at max; it kicks in more as I back off either volume control, almost switching in at about 80% on either the normal or bright channels (although the "on-switch" effect is more noticeable on the normal channel.)
The buzz increases significantly as I bring up the vib intensity, and it helps a lot to have a footswitch connected with the vib off.
I don't know exactly what year this amp is, but it doesn't have any ribbon cables in it. I was surprised at the relative sloppiness of the lead dressing; the heater wires are pretty loose and not twisted together, and things aren't really all that carefully arranged. That being said, in briefly poking around with chopsticks, I couldn't make any huge improvements in the noise level by moving stuff around, so maybe this isn't so critical?
I love the tone of this amp, but I rarely use it because it's so noisy (and it lives in a recording studio.) I just built a Weber 6A20 kit which is far, far less noisy at comparable levels. Anyway, if anyone has found specific things that help these guys out, I'd appreciate the advice.
A few specifics: buzzing is lowest when both volume pots are at max; it kicks in more as I back off either volume control, almost switching in at about 80% on either the normal or bright channels (although the "on-switch" effect is more noticeable on the normal channel.)
The buzz increases significantly as I bring up the vib intensity, and it helps a lot to have a footswitch connected with the vib off.
I don't know exactly what year this amp is, but it doesn't have any ribbon cables in it. I was surprised at the relative sloppiness of the lead dressing; the heater wires are pretty loose and not twisted together, and things aren't really all that carefully arranged. That being said, in briefly poking around with chopsticks, I couldn't make any huge improvements in the noise level by moving stuff around, so maybe this isn't so critical?
I love the tone of this amp, but I rarely use it because it's so noisy (and it lives in a recording studio.) I just built a Weber 6A20 kit which is far, far less noisy at comparable levels. Anyway, if anyone has found specific things that help these guys out, I'd appreciate the advice.
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