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Bass eating batteries

Discussion in 'Pickups & Electronics [BG]' started by Drop1, May 22, 2019.


  1. Drop1

    Drop1

    Mar 28, 2019
    Ok. Been leaving my bass unplugged and still draining batteries. Where should I start to diagnose the issue ?
     
  2. I think some of the SR800 are wired backwards at the output jack.
    Plug in a TRS cable & measure DC Volts from ring to sleeve.

    @Spidey2112 had this problem, IIRC
     
  3. jetgraphics

    jetgraphics

    Dec 12, 2007
    Jawjuh
    Don't you wish someone made a Lo-Z XLR system to use the phantom power of a mixer to power active electronics?
     
    fhm555, Sav'nBass and megarat like this.
  4. Drop1

    Drop1

    Mar 28, 2019
    It doesnt help that it's a different pre either. I don't know why he didnt use the Jack that came pre wired to the east pre and soldered onto the crappy barrel jack.
     
  5. Drop1

    Drop1

    Mar 28, 2019
    There is a French bass in my Guitar center that has that exact setup but set up for European power. Looks like something Les Claypool would play. It's really nice.
     
  6. lz4005

    lz4005

    Oct 22, 2013
    99% of the time the solution is a new output jack. This is what happens when they go bad.
    It's a $15 part that needs 3 solder joints. Very easy do it yourself fix.
     
    SirMjac28, B-Mac, rodsnhawgs and 6 others like this.
  7. Drop1

    Drop1

    Mar 28, 2019
    I have a nice one that came with the East pre. I don't know why my luthier didnt use it.
    Hopefully it's a quick way fix and I can move on.

    Thanks guys.
     
    Reedt2000 and Spidey2112 like this.
  8. Drop1

    Drop1

    Mar 28, 2019
    If a single strand of wired was touching from positive to negative it would create a constant drain correct ?

    I'm not sure it was touching but there was a stray strand really close going from ground to power.
     
  9. Spidey2112

    Spidey2112

    Aug 3, 2016
    Memory like a steel trap, KBD! :thumbsup:

    Check the jack... probably have the negative of your battery wired straight to ground.

    images(26).

    Unsure if you have this jack, or not, but principle is the same.

    In my case, it was miswired (from the factory), with the ring and sleeve tab wires reversed (understandable, as both wires were black... but not forgiven).

    If you check yours, see if you can't locate the black wire from the negative of the battery compartment. Give a little tug on it, seeing which black wire moves at the jack, ensuring it's on the correct lug of the jack...
     
    nbsipics, LowRick, B-Mac and 3 others like this.
  10. Drop1

    Drop1

    Mar 28, 2019
    My black battery wire is going to the sleeve. Is this correct?
     
    Spidey2112 likes this.
  11. Spidey2112

    Spidey2112

    Aug 3, 2016
    Barrel jacks suck! Sad, but true.
     
  12. Spidey2112

    Spidey2112

    Aug 3, 2016
    According to the pic, this is straight to ground... so, no. Can you upload a pic?
     
    EatS1stBassist likes this.
  13. lz4005

    lz4005

    Oct 22, 2013
    Isn't that how some Alembic basses work?

    Output jack.
     
    mdogs and Spidey2112 like this.
  14. Drop1

    Drop1

    Mar 28, 2019
    I am holding the battery lead. 20190522_171634.
     
    Spidey2112 likes this.
  15. Spidey2112

    Spidey2112

    Aug 3, 2016
    Lol! Anymore, I try to hopefully post a pic of a jack... and hopefully, it's correct. :)
     
    EatS1stBassist likes this.
  16. Spidey2112

    Spidey2112

    Aug 3, 2016
    images(34).

    Right pic... ensure your black battery wire is going to the thinner tab. The ground is the fatter tab.

    From your pic, it looks as though the battery wire is going to the fat ground tab.

    How awesome would that be to have a different color wire for either the ground, or battery connection?
     
    Troy Eggen and Reedt2000 like this.
  17. Drop1

    Drop1

    Mar 28, 2019
    Yes. Battery is going to short fat tab not long slender tab. If this is the problem I'm stoked. I sure didnt want to trouble shoot this rats nest.
     
    Reedt2000 and Spidey2112 like this.
  18. Drop1

    Drop1

    Mar 28, 2019
    Really appreciate this guys. Can you imagine trying to sort this kind of crap without the proper info?
    It would be a nightmare.
     
    Reedt2000, twinjet and Spidey2112 like this.
  19. Spidey2112

    Spidey2112

    Aug 3, 2016
    Just reverse both black wires, with their respective lugs.
     
    EatS1stBassist likes this.
  20. Ampslut

    Ampslut

    May 15, 2017
    Could be that the output jack isn't disconnecting the pre when you take out the plug.
     
    EatS1stBassist likes this.

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