Question about Harman Kardon AVR 340 Receiver

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Static or hiss noise

I have a new unit that was bought on a buyout not sure if warranty would be avaialble. It appears to be a simple problem with the unit. The unit comes on and the display appears to be normal but when the amp comes on the speakers are hissing or sounds like a radio station without an antenna. No matter what input you select the sound output is the same.

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I have the same problem. Only one speaker is hissing and only for analog sources. No hissing when I select Coax.

Posted on Nov 23, 2006

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Posted on Jan 02, 2017

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1 Answer

Static Noise


Is it a hissing noise or a distorted crackling noise? If it's a hissing noise then it's due to a bug in Windows that adds 30 dB of gain. It's easy to work around, though: Go into Recording devices, Properties button, Levels tab, right click on the level number so that it shows in decibels, and then adjust the level to 0 dB. It's supposed to be at 0 dB but Windows 7 defaults it to 30 dB for no reason. This isn't a problem on Windows XP or OS X.

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I have a lap top easynote TJ75 .with no valid reason my right speaker is not working properly.Sometimes it makes sound with hissing or sometimes it plays normally with hissing.The last thing I did was to...


if these speakers are external as it looks like
try swapping the speakers around if the problem still persists either the speaker is faulty or
the speakers plug/outlet is usually at the back of the computer you will have to open up the computer to check the lead attached to the rear of the input plug make sure the connection is good
or you might have to clean the dust from your computer dust causes static which causes your computer to overheat and all sorts of problems
be sure to wear an anti static earth strap before touching anything inside your computer try cleaning your computer of dust using a fine air blower from a compressor making VERY sure that there is no MOISTURE in the air line specifically around the CPU central processing unit and your SOUND CARD dust causes static to build up in a computer causing it to overheat any many other problems
if the problem still persists
if its still under warranty take it back
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1 Answer

When I put my PSU on the ON position, it makes no noise, but when I turn it off, it makes a hissing noise and does the same if I unplug it. It was bought two weeks ago and made noise when I first used it,...


if its only 2 weeks old should and its brand new be under warranty

Test your PSU or replace it if your power supply units fan is not working your PSU is faulty

hope this helps and good luck building your first computer

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The part that's gone should be easy to spot if it had smoke comming out of it. If you can't read the numbers on it due to damage, remember that their will be another one excatly the same in the left channel.

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1. Unplug the unit
2. Turn the unit upside down and listen for the beeds to move along the static wires from top to bottom. Turn it upside down again and again until you feel the static wires are cleaned of grime.
3. Plug it in again and see if the hissing is gone.

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change youre speakers they are blown if they are making staticy sounds i have recently chnged my speaker cuz of the static and it was kuz they were blown

thats all i can think about
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1 Answer

Hissing sound in the middle of videos Logitech Communicate STX


Normal 0 Two things can cause static.
First, If you have your speakers turned up to high it will give you feedback causing distortion and static. I recommend using a headset when videoing.
Second reason is, if you are using a laptop and have added an external microphone between the two it will cause distortion and static.
Not knowing the configuration of your computer makes it harder to analyze the problem.
So hope this is of some help. Bud

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