weirdest bass malfunction

Discussion in 'Basses [BG]' started by Runlikegregg, Jul 11, 2013.

  1. Runlikegregg


    Dec 31, 2011
    has anyone heard of this happening?

    a week ago my bass pick-up stopped working. completely. no signal.
    I have a G&L LB-100 with a Lollar split-coil P-bass pickup.

    I took it to my friend (a guitar tech) and he confirmed the pick-up wasn't sending any signal.
    I have a brand new Seymour Duncan Antiquity pick-up and he replaced the Lollar with that, tested it out, sounds great.

    I got the bass home, plugged it in and there was hardly any signal. I tried different cords, different amp, another bass worked fine on the amp.

    After wailing on the E string for a minute the bass comes back to life and seems to play fine until I put it down again.
    Then, after like an hour of not playing the same thing happens.

  2. Sounds to me like something is being pressed against a ground and shorting itself.

    Or the input jack has a wire about to break. Has it been tightened recently?
  3. Lo-E


    Dec 19, 2009
    Brooklyn, NY
    Well, if I was a betting man I'd say you've either got a bad pot or a bad output jack.
    Neither one is all that uncommon.

    Try wiring the pickup straight to the output jack - bypassing the pots - and see if the trouble goes away. If it does, you have a bad pot. If it doesn't, try replacing your output jack.
  4. Runlikegregg


    Dec 31, 2011
    well, i'm not sure to be honest.
    It certainly could have been since the bass was just in for this pick-up repair?
    it was set-up as well, so maybe he went over everything.
  5. Runlikegregg


    Dec 31, 2011
    that will be the first thing we try!
  6. Bitterdale

    Bitterdale Natural Born Lurker Supporting Member

    Dec 4, 2010
    Ocala, FL
    Before you do this, check to see if a pot has rotated allowing a lug to contact the shielding paint in the cavity. it can ground itself out as previously suggested. I've had this happen before with similar results.
  7. Lo-E


    Dec 19, 2009
    Brooklyn, NY
    Good thinking. Easiest first!
  8. MonkeyBass


    Mar 22, 2009
    Denver, CO
    Bad or cold solder joint?

    Bad volume pot?

    That's a weird one.
  9. Runlikegregg


    Dec 31, 2011
    turns out it was the pick-up!
    after checking everything else, checked the pick-up, took off the covers and found a teeny tiny spot where the lead wasn't soldered well, apparently that way from the factory.