Re: gEDA-user: buzzing board

[Steve Meier <smeier@xxxxxxxxxxxxxxxxxxx>]

I suggest stopping trying to solve this problem using itellect. At times
shots in the dark workbest. Take your board outside at night and take
your 22 with you set the board up in a safe spot and there in the dark
aim for where the buzzing sound is comming from and fire. Repeat the
last step until the buzzing sound stops.

On Fri, 2007-09-14 at 20:14 -0500, John Griessen wrote:
> DJ Delorie wrote:
> 
> >> Rather than trying to find out what is buzzing, can you find out
> >> what is not buzzing, or make the problem worse to make it esier to
> >> find?
> > 
> > So far, I haven't been able to affect the sound in any useful way,
> > just a few useless ways.
> 
> The buzzing's audible, you said.  You could put small rattly things on 
> surfaces to detect where the motion is largest by making other harmonics 
> suddenly apparent.  Sound power is coming from motion...   Think snare 
> drum.   What have you got that's like glass beads suspended on 
> monofilament line?  That would have a snare drum effect when lightly 
> dragged across your board.
> 
> Like an ultra-low-tech microphone-preamp-FFT-display-analysis chain
> that uses your eyes-ears-brain and a simpler snare drum tool instead.
> 
> If you have on old Victrola with bamboo needles, you could take the head 
> off and feel around with it for some amplification of the local 
> vibrations...  Steel needles might be trouble...
> 
> John Griessen
> 



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