From: "Pete Turnbull"
<pete(a)dunnington.u-net.com>
On Nov 24, 9:08, Dwight K. Elvey wrote:
Hi
Pairs of switching power supplies often interreact to
make a sound like hissing. There may not be anything
wrong with it. Still the electrolytic leaking might
be a problem.
OfficeConnect hubs, switches, whatnots, are very small devices that
have an external wall-wart PSU and no fan, and are normally absolutely
silent.
Ok, how about one of those little beeper/speakers? Does
it have one of those? Otherwise, it is most likely an
electrolytic.
Dwight