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Lights come on but it just buzzes an gets hot no sound but the amp buzzing an get hot as hell

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  • AMP Master
  • 42,042 Answers

You have a short in the machine
take it in for repairs

Posted on Apr 12, 2015

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6ya6ya
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Posted on Jan 02, 2017

Geekman
  • 32281 Answers

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.

Posted on Jan 03, 2009

  • 29 Answers

SOURCE: Nothing but loud buzzing coming over the amp.

If the buzz disappears when you unplug the cable from the amp. check your cable.
If the buzz disappears when you unplug the cable from the instrument, there's something thay may have come loose inside the instrument.
If you unplug the cable from the amp., and the buzz persists, you'll have to have a competent tech. check your amp.

Posted on May 20, 2009

  • 5603 Answers

SOURCE: my spider III 15 watt buzzes whenever i have a cable plugged in.

MAKE sure you have it connected to a three wire circuit that has the ground. A lot of these style amps will buzz if they are left ungrounded.

Also search for sources of buzzing light light dimmers.

Further, power supply electrolytic filter caps are suspect.

Posted on Aug 27, 2009

  • 5603 Answers

SOURCE: Buzzes and feedback

Make sure the "ground lift" option is used on the direct box.

DO NOT UNDER ANY CIRCUMSTANCES use a headphone output jack as the output of this unit. The headphone jack is for HEADPHONES that have no return to ground. Use of this as drive to a sound board is sure to cause problems and in some cases can fry these amps due to the circuitry.

The cable used to go to the direct box should be very short and high quality.

You should source the power for this unit from the SAME source and receptacle as your sound board if at all possible.

Posted on Nov 08, 2009

  • 5603 Answers

SOURCE: My BOSS Distortion(DS-1) pedal buzzes whenever the

This sounds like a broken ground wire or trace within the unit if an IDENTICAL pedal does not act the same AT THE SAME SETTINGS.

Sometimes a circuit trace gets broken on the board inside pedals and can cause this.

Since an identical pedal doesn't have the problem, service is required.

If you know electronics you can open the pedal and look for obvious problems.

HINT: Use a bright LED penlight to "candle" the circuit board to look for cracks.

Look for broken solder joints... this can take an experienced eye to spot.

A distortion pedal NORMALLY is very simple circuitry.

Posted on Nov 10, 2009

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1 Answer

Why does my carvin sx-300 amp buzz


Most Amps will buzz or hum when there is a bad ground. It could be because you're plugged into an outlet with some other piece of equipment on it like a motor. if it buzzes on every outlet then there's probably a ground issue in the amp. You can try cleaning your 1/4 jacks with cleaner cause sometimes they'll get cruddy and make for a bad connection. I wouldn't recommend opening the amp and messing around with anything since you could zap yourself. If the amp buzzes withouth even having anything plugged in, then yeah, it's probably the amp with the bad ground. If it buzzes with instrument plugged in, then maybe it's a plug on your instrument since they have to deal with movement and can go faulty after a while. Good luck!

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1 Answer

Peavey 6505 plus buzz...even when all controls on zero and no guitar plugged in


Sounds like a bad power supply filter cap...the buzz you're hearing is the 60 cycles hum that filter caps reduce or (hopefully) eliminate altogether. It may also be related to the tubes but finding the bad one will require some work. Any friends have this same amp? If so, try swapping one tube at a time and see if you get lucky. If this amp is new take it back ASAP as it is a manufacturing defect.

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1 Answer

My Marshall MG50 DFX Has an awful buzzing sound that comes out of it after startup.


I would check C22 and C24 the main smoothing capacitors. They can fall out at worst or just have bad solder at best.

Mar 20, 2017 | Music

1 Answer

Hi, when using the gain control on my amp I get a buzz and an 'osilating' sound. I've tried several guitars and leads but still the same problem, any suggestions?


Hi.

If the amp is working, then most of the time the buzz is given by a bad grounding. Test the amp using different wall sockets, and possibly test it in a different home (there may be an earthing problem with the home network). If the problem goes away, then it was the wall socket or the home power network. If the buzzing is still there the problem is with the amp. Check the earth connection at power cord and psu and test the amplifier's PSU components. Check also the audio connections inside the amp (the back of the female jack input sockets). A small contact in there will result in a loud buzz.

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1 Answer

Hi i have connected all the cables up correctly & have it all working except i have some sort of interferance coming through.i have a contant crackling & on & off buzzing sound,sound like...


First thing: Make sure ALL and I do mean ALL of your interconnected equipment is POWERED from the SAME receptacle. Powering different parts from different receptacles in a building will surely get ground bounce buzz and ALSO subject the equipment to hazards of circuit damage.
The audio connecting cables should be BALANCED lines where possible... either XLR or TRS cables. Problems like you are having are common when CONSUMER grade equipment is mixed with PROFESSIONAL equipment. Anyway, get all the stuff powered from the same receptacle and get back to me if you still have the problem. Note you may have to run three wire extension cords if devices are separated a bit... the pro's have to do that to avoid noise. All devices should have three wire (grounding) cords and/or grounding wires connecting chassis...

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2 Answers

If I strum harder on my guitar a buzzing noise comes out of the amp. Also every sound I try on the amp sounds very twangy and painful to the ears. I use an overdrive pedal with it, but every setting is...


If you don't want distortion, get rid of the overdrive pedal... Twangy USUALLY comes from the GUITAR and NOT the amp... test it on a different amp to decide... Buzzing CAN be caused by "fret buzz" which is due to IMPROPER guitar setup such as neck bend and string height.
Start using ONLY clean channel on the amp and NO reverb. If you verify that the guitar sounds bad on a different amp, take it in to have it setup properly.

Feb 10, 2011 | Fender Frontman 212R 100W 2x12 Guitar...

1 Answer

My fender hot rod deluxe is buzzing


Is it the amp for sure? You need to try these things first :

Plug your guitar and lead into another amp. Does it buzz?
If so, Change the guitar lead with a NEW ONE.
Still Buzzing? Your guitar needs attention.

Ok so if it's not noisy in another amp, turn on your fender with nothing plugged in. It should be silent? Is it? If not, check to make sure no ones messed with the earth lift switch.
Next, you should try it off a different ring main. If you have upstairs sockets and downstairs sockets, they should be (but not always) on a different ring main. Try it? If you live in a flat for example, or are unsure, try it round a mates house. If it's noisy off one ring and not on the other, you have some mains interference from something else plugged into the ring main and it's not your Amp.

Is it still noisy?

Well so far, I'm hoping you have been using it all Clean and direct with NO FX Pedals and such like. These thigs can add numerous buzzes and hums to any rig. Again break it down, try each one by one until you get the rid of the buzz.

If after all this, your Fender is still being noisy, you can safely take it to your nearest music store to get it repaired without feeling like a plonker :-)

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1 Answer

I have 2 mackie mr8's and only one does it. can you help me. basically when i turn it on after it being off for a while, the driver 'sucks' in and makes a loud buzzing sound. can you help please


For some reason the power amp is saturating to one side of the power suply rails. This can happen if :
1. Power supply looses one of the polarities.
2. The Power amp circuit loses the DC feedback and saturates to one of he rails.
3. A circuit board trace or bad solder loses one polarity to the power amp.

DO NOT permit the unit to run this way for any length of time because it will burn out the voice coil of the speaker.

The buzzing is due to the amp losing feedback and basically connecting the speaker to one side of the power supply. The ripple current of the supply causes the buzzing.

Put a 40 wat light bulb in series with the hot lead of your line cord to act as a current limiter while troubleshooting the problem. You can find the problem with only a voltmeter.

PARTS OF THE SCHEMATIC "MAY" be close to this document:

http://elektrotanya.com/mackie_hr824_studio_monitor.rar/download.html

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1 Answer

My spider III 15 watt buzzes whenever i have a cable plugged in.


MAKE sure you have it connected to a three wire circuit that has the ground. A lot of these style amps will buzz if they are left ungrounded.

Also search for sources of buzzing light light dimmers.

Further, power supply electrolytic filter caps are suspect.

Aug 23, 2009 | Line 6 Spider Iii 15 Modeling Guitar...

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