Quote:
Originally Posted by AndrewJ
Hmm thanks, it just begun doing it a few days back I thought my Macbook was having HD issues until I sourced the noise down to the router.
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If it only started a few days ago then there could be something wrong. Hissing can often be plotted down to an "arc" of electricity as well as normal electronics noise. However in the case of a router running at such a low voltage it would be very difficult to do. I'd keep an eye on it and check its not running hotter than normal.