Re: weird constant hissing sound coming from one speaker
Apparently, _Raghavendra Bhat_, on 09/24/04 11:29,typed:
H. S.
The first thing you have to do is to get the chassis of the machine
earthed properly, either via your power plug or 'crocodile-clipping' a
good earth-wire to the chassis. Later you can screw on a pucca
earth-wire.
It is grounded via the power plug. I have no reason to believe there is
anything wrong with that.
Isolate the speaker-out wire from the sound-card alone, see if the
/hiss/ exists. If not go on connecting your peripheral cables and listen
till it appears again.
If I disconnect the speaker from the sound card, the hiss goes away.
Reconnecting it back makes the hiss come back.
There are big ferrite beads available. Get a couple of beads through
which you can pass the speaker cable. You need not cut the formed
speaker wire/cable, just loop-string it at the sound-card pin end. If
the hiss has stopped, good.
I am not sure this will work since if I boot in Windows the speakers
work perfectly well. It is only if I boot into Debian that the hiss
comes back during the boot process someplace (which as I mentioned is
around when lp0 starts).
Note that the hiss just not some background white noise. It is very
pronounced. It gets attenuated when some sound plays (e.g. when I do a
sound test in KDE). Otherwise it is like an FM radio, but coming only
from my left speaker. Right speaker is perfectly okay as it was before.
guess this is a difficult one and I haven't been able to give more
info
Isolating the problem is a PITA but fixing it once isolated, is easy. ;)
Hth.
Well, it is at least asking me to give you more information which may
exclude some possibilities and thus help narrow down the cause pf the
problem.
thanks,
->HS
--
Ragu VU2RGU
Free software is an attempt to use the 18th century principles for the
encouragement of the diffusion of knowledge to transform the technical
environment of human beings -- Eben Moglen
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