Can you locate where the sound is coming from on the board? Nothing
should be loose. Nothing should be releasing enough energy to be
audible.
Or, are you talking about an electrical signal being emitted on the
green socket?
--
James Cameronmailto:[EMAIL PROTECTED]
On Thu, 2006-09-21 at 02:09 +0200, Carl-Daniel Hailfinger wrote:
Hi,
I have noticed some high-pitched noise during each bootup,
estimated frequency is 12kHz. Sounds like a bird chirping,
but with a much higher pitch near the upper hearing range.
The sound is also quite quiet and can't be
The likely suspects are the inductors in the various switching regulator
circuits.
They look like little black water tanks and most say 5R0R on top, but
the one near the power input says 100PF. (you might think that to be a
100 picofarad capacitor, but it's actually an inductor. Go figure.)
I've heard something like it too, and when I commented on it to MarkF he
said it's normal and is part of the DC electronics stepping down the
voltage (or something like that). Somewhat like the high-pitched whine
you can hear from the high-voltage flyback transformers in television
sets and
Mitch Bradley wrote:
The likely suspects are the inductors in the various switching regulator
circuits.
They look like little black water tanks and most say 5R0R on top, but
the one near the power input says 100PF. (you might think that to be a
100 picofarad capacitor, but it's actually an
Carl-Daniel Hailfinger wrote:
I do have hot-melt glue, but I'm hesitant to apply it to the devel board.
Glue won't hurt an inductor
However, since inductor whine seems to be expected, can I assume it won't
be audible when the board is inside the laptop? Children have better ears
than most of
