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Amp sporadically popping - Any ideas?

Discussion in 'Amps and Cabs [BG]' started by Luke Warm Water, Dec 18, 2017.

  1. Luke Warm Water

    Luke Warm Water Supporting Member

    Oct 23, 2012
    San Diego
    Hey All,

    I have an Eden Road Runner brain (tube) from the 90's. Love it.
    Except that, once turned on for about 10-20 minutes (bass plugged in), it makes a single and unpleasant pop every now and then. Sounds similar to when you unplug before the sound guy kills the mains, or if you have a funky chord where you unplug and...boom!

    This has happened in a number of places with different basses.
    The other day I just plugged a bass in, turned it on, and let it sit. About 10 mins in, POP! and then another a few minutes later.

    This thing is scaring me at gigs and I can't use it anymore.
    Any ideas?

  2. Stumbo

    Stumbo Guest

    Feb 11, 2008
  3. BassmanPaul

    BassmanPaul Inactive

    Take the unit to a tech and let him/her repair it for you.
    agedhorse and Stumbo like this.
  4. Luke Warm Water

    Luke Warm Water Supporting Member

    Oct 23, 2012
    San Diego
    Thanks guys. I'm wondering if it could be the jack. This amp has been completely re-soldered with a new tube.
    Appreciate the responses.
    Need to find the right guy in San Diego...
  5. Stumbo

    Stumbo Guest

    Feb 11, 2008
  6. If it's tube amp, popping sounds can be the caps or even just tubes going out. I just had one of my Fender tweeds do that. We changed one cap out. Problem solved. Tube amps can kill, take it to a pro.
  7. chadds


    Mar 18, 2000
    Are you sporadically “slapping” too? :)
  8. kpc


    Apr 6, 2011
  9. basspro

    basspro Supporting Member

    Mar 10, 2009
    Las Vegas,NV
    +1 Kirk. Sounds like a cap bleeding off.
  10. BassmanPaul

    BassmanPaul Inactive

    As one cap said to another “If you cut me do I not bleed?”
  11. Primary

    Primary TB Assistant

    Here are some related products that TB members are talking about. Clicking on a product will take you to TB’s partner, Primary, where you can find links to TB discussions about these products.

    Apr 16, 2021

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