[Stu_Vaz]

Thanks for the information, it's good to know that it's probably just a
problem with the unit. I'm on the lookout for a replacement system,
but for the time being I've just removed the speaker from the sub so I
can still utilise the other speakers.

Thanks again,

Stu

Richard Crowley wrote:
"Stu_Vaz" wrote ...
I've recently started getting a very strange problem with my
computer's
speaker system. It's an old Logitech sr-30 and until now has been
fine. The sub unit has randomly started making loud crackling sounds
and general loud interference noises (volume isn't related to volume
of
the system). This is the unit that plugs into the mains, and none of
the other speakers are affected. It doesn't seem to happen at a
particular time, or caused by a particular event, but the only way to
stop it is to cut the power to the device. If left and turned back
on,
it is sometimes fine (even for up to a day) and other times continues
to make these stranges sounds.

I've isolated the unit, so it's just that plugged in (no speakers, no
input) and it still happens. I've tried it in various sockets
throughout the house, and am going to try some more to see if it still
occurs. If it does, i'll take it elsewhere and see if it's a circuit
problem.

I've done some research, and can't find a solution, or anything to
explain why it would suddenly start happening. Is the unit just at the
end of it's life?

If anyone has any suggestions to what the problem is, i'd be very
grateful. If it's dead then fair enough, but I don't want to get a
new
speaker system if it's a power problem and will just have the same
issues. Although if it is power related, why now?

It is not very likely related to power. Sounds like one
(or more?) joints on the circuit board may have developed
cracks/bad solder joints/etc. This sometimes happens just
from age, but is also accellerated by heat. It is also possible
that a small internal component is going bad. Crackling is
usually NOT a symptom of a power problem.

A competent technician could open it up and probe around
to find the bad spot(s), but unless you can do this yourself,
the speaker system is likely not worth the cost of repair.
Note that I am *NOT* recommending this as a DIY project.