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Genz Benz Shuttle - Squealing Pots

Discussion in 'Amps and Cabs [BG]' started by -Shaun-, Feb 10, 2018.


  1. -Shaun-

    -Shaun-

    Feb 10, 2018
    New Zealand
    Hi, everyone.

    I've done a search and nothing has shown up particular to what I'm asking. My Genz Benz Shuttle 6.0 has been squealing a bit recently. I've been away in Japan for about 3 years, so it hasn't had any play since then. Could that be part of the issue? Basically, both the mid knobs ("Mid" and "Mid Freq") under the parametric EQ section seem to squeal and make all sorts of strange noises when I turn them. It's not all the time, and if I don't touch them, they're fine. It seems to be when they're turned past about 2 o'clock that they start playing up. I've tried the mute button, the gain and the tube preamp volume knobs. None of those alter the sound, so I guess it's happening after the preamp. It also does seem to be concentrated on those two controls on the mids section. The master volume does, of course, affect the volume of the squealing.

    I know there are some GB people around, like Aged Horse. If anyone could chime in with some words of advice I'd be very glad. Long time player, who has never fiddled with amps before.

    Cheers,
    Shaun
     
  2. -Shaun-

    -Shaun-

    Feb 10, 2018
    New Zealand
    Adding video to give you a clearer idea.
     
  3. agedhorse

    agedhorse Supporting Member Commercial User

    Feb 12, 2006
    Davis, CA (USA)
    Development Engineer-Mesa, Product Support-Genz Benz
    Are you in the US/Canada? PM me and I can get that taken care of for you easily. If not, I can support any Fender Electronics authorized service center who is willing to work on it.
     
    NigelD likes this.
  4. -Shaun-

    -Shaun-

    Feb 10, 2018
    New Zealand
    Thanks for the reply, mate. Unfortunately not, I'm in New Zealand. If it's something simple, I'm more than happy to do it myself. If it requires a particular level of expertise, I guess I'll be taking it in to a shop.
     
  5. agedhorse

    agedhorse Supporting Member Commercial User

    Feb 12, 2006
    Davis, CA (USA)
    Development Engineer-Mesa, Product Support-Genz Benz
    It will likely need some parts, but there are some specific tests that are needed to be done as the causes of this problem are very easy to misdiagnose and screw up.

    If you can find a Fender Electronics authorized service center willing to work on it, I am authorized by FMIC/KMC (former and current brand owners) to support them at the factory level. I may also be able to support a Mesa authorized service center that might be willing to work on it, but will need to get permission first.
     
  6. -Shaun-

    -Shaun-

    Feb 10, 2018
    New Zealand
    Thanks again. Currently trying to find an authorised service centre, but not getting any luck at all.
     
  7. 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.

     
    Feb 26, 2021

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