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Integrated Amplifier - Volume Control Problem

When I turn the volume control up on my amplifier, I get a crackling sound. The noise discontinues once I stop adjusting the volume. My unit is 25 years old and I have no other problems. I am thinking of just trying to clean inside the unit.

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Re: Integrated Amplifier - Volume Control Problem

Hi there, get down to your local electronics supplier and buy a tin of spray switch cleaner. Try and spray some into th v/control and do the other controls at ther same time, this should solve the problem

Posted on Aug 28, 2007

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No fear.
Try to reachinternal side of front panel with volume controls. Put some paper towels under the front panel. Pour lighter fuel into every dirty volume control turning knob around several times.- It will rinse out all dirt from carbon track or contacts. (I don't know what kind was used).- This is only temporary solution, good for one year or so. Proper solution-> unsolder volume control, open it up , inspect and clean or replace for a new one. It will work, I did it hundreds of times...always with positive results.

Oct 14, 2012 | Amplifiers & Preamps

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Crackling noise with my volume knob when i turn the volume

It's probably dust in the volume control. It gets in between the carbon track and the wiper that rotates on the track, or the resistive / carbon track inside the control is wearing out. As yours is stereo there will be 2 tracks and 2 wipers, one could be worn more than the other.
This should give you an idea. Inside Pot

May 05, 2012 | Amplifiers & Preamps

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SU-V60 volume knob needs fixing. Very loud crackling noise, volume goes up or down on own.

I reckon this could be an older type of volume control, which if it is a spray of Servisol Video 40 on the workings of the control (inside the unit if you can) should correct it. Otherwise it's an IC that controls it and needs to be replaced.

Nov 06, 2011 | Technics SUV500 2-Channel Amplifier

1 Answer

My su-g95 technics Stereo integrated amplifier wont play any noise. and when i adjust the volume it makes a popping/crackling noise. i am 100% sure all the speakers were hooked up correctly.

Well it sounds like your amplifier IC's are working correctly since you are hearing that pop. I have the same amplifier and every 10db increment it pops. Have you tried every input? Possibly try starting at a low volume, plug an RCA plug into CD or any other input, and touch the center prong of the other end of the cable. You should get a 60hz hum if your in the USA, otherwise it will be 50-55hz. Regardless it should make noise.

Sep 29, 2011 | Technics SUV500 2-Channel Amplifier

1 Answer

Crackling sound from speakers

Most probably, your volume control potentiometer is dirty or worn out.

May 01, 2010 | Denon Amplifiers & Preamps

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What causes "crackling noise" from "A" side banana plug output? I've replaced the banana plug and cable.

check your inputs(mic or dvd or other)for good cables to amplifier and you can apply a contact cleaner with its long pipe to volume control and move it forward and backward(you can get lubricat contact cleaner from radio shack near

Dec 26, 2009 | Peavey PVĀ® 2600 2-Channel Amplifier

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Technics su-v560 stereo amp crackling

That is a common symptom of not properly grounding of negative side of the output of power amplifier section.Just resolder all component parts joint in power amp.sectiton and double the solder all negative ground.Also clean the pots of all volume controls and selector with a lighter fluid or desame that fluid so whatever sound or crackling noise eliminated and works normal again.. Hope it may help you;;

Jun 08, 2009 | Technics Amplifiers & Preamps

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Amplifier will only put out "faint" music, etc, even when the volume is turned all the way up

This may sound silly, but please check to be sure that the tape monitor switch in not engaged. Update this if that is not the problem.


Sep 29, 2008 | Amplifiers & Preamps

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