Why do my PC speakers have a crackling sound?

princedakkar69 March 25, 2013
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My computer speakers were playing fine, sounding awesome and very clear. One day I brought home a can of compressed air to rid my PC of a ton of dust and when I plugged them back in they have a static crackling noise to them. I have them plugged into a two-port switch so that I get sound from both my PCs that I switch to.

One PC is using Windows and the other Ubuntu but the sound is the same on both PCs. Any idea what could have caused this to happen?

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