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Sean Posted on Feb 07, 2019
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Fishman prefix plus on Martin OMC 15E buzzing when volume knob is turned and random shorting out sounds through amp

Roughly 10 years old. Love the guitar, and the sound, especially through the fender accoustisonic junior. Recently put a ditto looper inline between the guitar and the amp. Hence plugging in more often but now the buzz and shorts are very apparent. Are these Fishman repairable or replaceable?

1 Answer

Mario Francis

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  • Expert 61 Answers
  • Posted on Feb 11, 2019
Mario Francis
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Joined: Nov 29, 2014
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You have to get the volume pot cleaned and lubricated. If not a quick replacement should do.

Testimonial: "Thanks. Is there an online guide I can access to help me not screw this up?"

5 Related Answers

Anonymous

  • 32281 Answers
  • Posted on Jan 03, 2009

SOURCE: loud buzzing when amp connects to guitar

The buzzing noise could be caused by a grould feedback loop. This occures when the amp is plugged into one power socket and the guitar's amp is plugged into a drifferent power socket.
Try to use a power board, plug in all your devices into this power board and plug the power board into a power socket.

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Fred Yearian

  • 5603 Answers
  • Posted on Mar 14, 2011

SOURCE: Pro Junior III Guitar Amplifier

There is likely one of three problems:

Blown rectifier in power supply.

Bad filter capacitor(s) in power supply.

Shorted power amp chip causing the riple on the power supply to reach the speaker.

Anonymous

  • 1 Answer
  • Posted on Oct 08, 2011

SOURCE: fender acoustasonic junior crackling

noise problem with fender jr accoustatics is the poor aluminum sheet ground design that wraps around the body of the amp. it happens to me all the time because i kept on moving/carrying/dropping the amp every time we do church service. i am thinking of using an aluminum cable to wrap around outside the body.

Anonymous

  • 5 Answers
  • Posted on Nov 21, 2011

SOURCE: Fender Deluxe Active Jazz Bass buzzing when i don't have my hands on the strings

Try reversing the wires in your input jack. Please repost results. Thanks!

guitarmanjoe

Joe Patch

  • 336 Answers
  • Posted on Mar 08, 2013

SOURCE: I recently had my fender

Spray contact cleaner into the back of the control and work it up and down many times quickly to clean it and go get your money back from the shop.

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Fishman Loudbox amplifier rattle sound on bass notes

Either the speakers have loosened from the faceplate, or one or more have blown. Open the amp and tighten them down. If that doesn't fix it, remove them a take them to the nearest speaker repair shop for a checkup. If blown either have them re-coned or replace them.
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When I connect the onboard Aura via USB to my computer and open the Aura imaging software, it doesn't recognize my device and a fishman product..... HELP!

You could call Martin Guitars at 1-888-433-9177, or visit their website:
http://www.martinguitar.com/contact

And/or try Fishman:
http://www.fishman.com/contact
Although they don't have a recognizable toll free number, they do have an online form.

If you have access to support for your computer, you could try that, instead.

Good luck, and I hope this helps!
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Fishman Prefix Plus preamp on my acoustic guitar picks up the unwound strings well but the wound strings are barely audible

You could try boosting the bass and reducing the highs on the EQ setting, however there MAY be a probllem with the pickup, not the preamp.
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Its a marshal 8080 valvestate 80 v and it buzzes and some of the knobs crackle when turned,

Buzzing could be normal for this amp, especially if you have the gain cranked way up (or the volume way up) see if the buzz goes away when you turn the gain/volume down. If not, there is a problem that needs to be properly diagnosed by the amp tech at your local music store. The crackling is also unfortunately rather normal for an amp that's a little older. Oxidation builds up inside the knobs and makes that noise as you turn them. If it only happens when you change settings I wouldn't worry about it, but if it gets bad, a tech guy can clean it out for you.
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I get a buzzing from the mic on my Fishman Ellipse Matrix Blend that stops when I revert to the pickup only. The buzzing becomes less when I touch the circuit board of the preamp underneath...any ideas?

This is a grounding and shielding problem. It is unknown what type of guitar you have but if there are other electronics, they need to be grounded to this device ground. Any source of magnetic fileds can worsen problems. Transformers in amps, etc. Solid body guitars have special shielding paint and you may be able to improve shielding by painting... just don't get it on circuit boards as it will short out the circuitry.
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I bought a Martin DC16GTE last year in Germany, brand new. (Music Store, Cologne) My Fishman prefix premium blend has a tuner build in. It tunes properly, but once activated, I can't turn it off by...

Most devices using a button to turn them on off SEEM to require HOLDING the button down for a bit (few seconds) to make sure you really want to turn the device off...
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My Fishman Loudbox 100 bass speaker buzzes- what could it be? Someone suggests it could be a poor ground, and to replace the input wire, etc. Does he mean the guitar input cable? The speaker does not sound...

It is a poor ground but it is not necessarily in your amp.
If it is only buzzing when you have a guitar or other piece of equipment connected try a new lead cable.
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My Fishman Prefix plus is not working through an amplifier and the tuner will not stay lit

Check the battery in the preamp. Also adjust the eq to see if you might be clipping the frequency you are generating.

ALSO do not overdrive a tuner... they get confused and won't register.
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