Buzzing at the bridge pin?

[Andrew and Rebeca Anderson]

Loose bridge pins can be solved with careful application of 
water-thin CA blue via a veterinary's syringe.  But, if it is a cheap 
agraffe with a visible cut mark on the speaking side, taking the 
string with a string hook and swinging it back and forth might 
eliminate the buzz.  Had the same thing happen on a chinese piano and 
is sure sounded like it was coming from the back of the piano.

Andrew Anderson

At 08:16 PM 4/30/2008, you wrote:
>I tuned a 30ish yr old Young Chang today that had a scattering of 
>notes that had
>a distinct buzzing coming from at least one string in the unison. 
>There were about
>5 of these notes, from the bass to tenor.
>
>Troubleshooting showed that the buzzing seemed to be happening at the front
>(termination point) bridge pin. No cracks. The pin was loose enough to wiggle
>a tad, but not loose enough to pull out with my fingers, even with the string
>removed.
>
>A previous tuner had "solved" the problem by putting a paper shim (about two
>thicknesses of a business card) on top of the bridge, under the strings.
>
>This seemed to stop the buzzing.
>
>Any idea what is going on here, and what is the right way to fix it?
>
>
>[kurt]
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