kingster911
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- Joined
- Feb 13, 2006
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How do I diagnosis a broken tube? I own a RKII Combo and I think there's a blown preamp tube (12AX7?) because I started getting this low growl of a crackle that I know wasn't tube vibration on Ch. 2 even only when it was on Fat with under half gain. Anyone know what it is? Also how do you remove the AX7's? I tried to unscrew but it felt like it wouldn't budge. Maybe I was being too delicate to my baby...