U1 Buzz

[David ilvedson]

Jay,

Check the soundboard buttons for tightness.  Sometimes 
debri can find its way onto the long bridge and vibrate nicely 
against the soundboard.

David Ilvedson, RPT

From:           	"Jay Mercier" <jaymercier@hotmail.com>
To:             	pianotech@ptg.org
Subject:        	U1 Buzz
Date sent:      	Tue, 14 Sep 1999 13:24:27 PDT
Send reply to:  	pianotech@ptg.org

> I'm having trouble finding the buzz on a new Yamaha U1.  It was delivered a 
> week ago and the owner complains about a buzz when the a5 key is played.
> 
> I noticed the following:
> 
> The buzz comes from the bass section, more evident around the center of the 
> action.
> The buzz does not go away after I mute all bass strings and the a5 strings.
> I tightened (just a little) all flange screws.
> I checked all other screws - none that are loose.
> I removed the pedal rods - buzz still there.
> I took the fallboard out - still there.
> The buzz is considerably dampened when I push the B-flat2 hammer towards the 
> strings.
> I'm about ready to give up.
> 
> I would appreciate any feedback!
> 
> Jay Mercier
> 
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David Ilvedson, RPT
Pacifica, CA
ilvey@jps.net