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When power is supplied to my ilive IT88b bar it has a loud feedback sound. there is no way when powered that it does not make noise.

When plugged in to the power source there is a loud static sound

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

sys_admin
  • 829 Answers

SOURCE: static noise coming out of speakers

What sort of computer do you have? Is it a laptop or desktop? Many laptops have this problem and it is quite widespread in laptops. The crackling or humming noise could be a result of interference from the mains power signal.

If it's a laptop, try running it on battery alone (take out the mains power cord). My laptop has this kind of noise in speakers when running on mains electrical supply, but it goes away like magic when I run it on battery.

A more long-term solution is to buy a 'Ground Loop Isolator' and insert it between your computer and the speakers/earphones. They are quite cheap and you could get it for under £10. It removes all static noise and you'll hear crystal clear sound.

Posted on Jan 01, 2009

localwonder
  • 6784 Answers

SOURCE: power supply issues

hi there, i recommend replacing the entire board. once you have a short like this, the micro board itself will become useless. the thin micro circuitry has become separated within the layers, preventing a closed current transfer. its best to order a new canvas so to speak.

Posted on Mar 11, 2009

dunnbiker
  • 8546 Answers

SOURCE: Alot of loud feedback through speakers, a loud buzzing noise

What sources make it happen or which do not? All buzzing = something in the amplifier end. is it from all speakers or just one?
One external source= RCA cables not grounded. Reconnect them tightly with a twisting motion to wipe off oxidation.

Posted on Apr 10, 2009

  • 5603 Answers

SOURCE: Hi,I turned on my Marshall mg series 100 dfx and

I suspect the power supply for the effects processor has failed. The effects unit will "go crazy" when power supply is too low voltage.

If the amp has loud noise, then the power amp portion is PROBABLY OK.

I had a similar problem in a Behringer amp caused by a bad electrolytic filter cap.

Posted on Sep 03, 2009

  • 11800 Answers

SOURCE: how do I fix bad static?

Yes,loud static usually comes from bad isolation of sound signal path so it's probably a frayed cable or a loose jack. Or if you're unlucky some parts inside have failed.

Posted on Oct 26, 2009

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Look for a wire strand or solder splash on any circuit boards or connections that might be 'almost' shorting out anything. Next, if there are any metal screws with very pointy tips (like sheet metal screws) that might be just a smidge too long and clip the very tip off so that it can't possibly short a frame to a component.

The idea is to find any reason why electricity might be bleeding over into another area of a circuit board that uses capacitors where a charge could build up causing the symptom you are describing.

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I GUESS that the speakers are driven by an after market amplifier. An amplifier needs to be connected to a power source that is only on when the radio is on, through a relay.

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How do I fix bad static? Dell W3706MC 37 in. HDTV LCD has been fine and suddenly the sound has loud static on all sources. Is this a sound circuit failure?


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Sounds like the cords that are going into the PC/system have static. Remove the cords from the speakers and simply put your finger around the jacks to remove static. Push the cords and the jacks back in and switch on the speakers. Then twist the volume control, turning it up loud and then low, then loud and low again. That should cure the problem as it removes static that gets built up over time. Either that or your speakers could well be damaged.

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I have had the identical problem from the beginning. It happens in humid weather. Unplug the set while it's on, wait a second, plug it back in, and turn it on. Sound should be fine.

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