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Home › Forums › Help/Technical Questions › LPB-2UBE problem
I’ve had the LPB-2ube pedal for about 3 years now and have been using it as a two (independent) channel tube preamp. i replaced the stock tubes with the tube store’s preferred series 7025 tubes and it’s sounded great until very recently – i noticed that one of the channels has started emitting a constant buzz and that there is a lot of noise when i turn the volume control for that channel.
i’m wondering if this could this be a sign of a potentiometer gond bad and/or is there something i can try to do to remedy this problem?
FWIW: the other channel sounds fine.
thanx,
_jc
anyone out there have any advice?
bueller?
I had noise problems with mine when I first got it, and solved them by tightening the screw between the tubes (removing the tube guard first). Since your problem is channel specific, that may not help, but it’s a quick thing to try.
If turning the knob really increases the noise, dirty pot could well be the culprit. I’ve never cleaned a pot on one of these, although I’ve cleaned them on amps plenty of times, and it’s not particularly dificult, just swab the contact with some rubbing alcohol, and let it dry.
Taking it apart to get to the contact, well, that’s the fun part…