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My EMG Pups and pre are killing my batteries

Discussion in 'Basses [BG]' started by Lobaw, Feb 26, 2008.

  1. Lobaw


    May 14, 2007
    Seattle, WA
    Perhaps someone can help me figure this one out. I've got EMG pups and electronics which use a 9 volt battery. For some reason, in the last year the battery has been losing its charge even if the cord isn't plugged into the jack. The last battery only lasted 2 months!! I've been using Duracell and Panasonic with good results. I looked at all the wiring and the jack and can't find anything obvious which may be causing the problem. Also, everything sounds find when I install a new battery, so I think the electronics are good.

    Any suggestions would be helpful - short of unplugging the battery once I'm done playing.
  2. looks like your harness is wired in a wrong way, it is hard to check the issue by the forum, i would recommend to visit your local technician for rewiring your bass from scrap.

    I believe this issue is easy to fix.

    //i've done an off/on switch in my ibz, so it is not important wether my bass plugged or not, i simply disconnecting positive polarity [+] from battery by that switch
  3. I had this prob once, there was a tiny piece of wire touching the output jack, surprisingly it worked fine with a fresh battery, but would drain overnight, even unplugged.
  4. El-Bob

    El-Bob Supporting Member

    Oct 22, 2006
    Hamilton, ON
    sorry for the unnecessary bump, but that is genius:bassist:
  5. Warpeg

    Warpeg Supporting Member

    Jun 20, 2005
    If you are using the stock Switchcraft 3-conductor 1/4" jack that came with your pickups/preamp, that is probably your culprit. I've had a few instances where the ring and sleeve contacts were touching ever so slightly. It was enough to kill the batteries quickly. Instead of going to the trouble of drilling a new hole in your bass, installing a DPDT switch, and spending time/money on installation, why not just pull out the jack and make sure the contacts aren't touching?

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