[LUNI] Laptop makes a funny noise

[Mike Scott]

Right, but if a power inverter isn't producing the correct voltage(s)
the unit might not boot.
If a transformer was broken, or a trace cracked that would knock the
oscillator off frequency, it could make a high-pitch whine and voltages
would be missing or out of tolerance.

Not that it helps much unless you can find and repair the damage.
If you don't detect any physical trauma, it may be hard to isolate.


- Mike Scott

> -------- Original Message --------
> From: "Jay Strauss" <me at heyjay.com>
> Date: Sun, October 14, 2007 5:09 pm
> To: "Linux Users Of Northern Illinois - Technical Discussion"
> <luni at luni.org>
> 
> 
> Yes, but my main issue is it doesn't boot.  I'm happy with noises and
> beeps if it would boot.
> 
> On 10/14/07, Mike Scott <mscott at pyewacket.org> wrote:
> > It could be a DC-DC converter .
> > The EL backlight uses one IIRC.
> > Maybe one of the transformers has come loose and you're getting harmonics.
> > That's usually high-pitched.
> >
> > - Mike Scott
> -- 
> Linux Users Of Northern Illinois - Technical Discussion 
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