Yamaha mystery noise

[David Love]

Leads on the underlevers are a likely source, but I would also check the
drop screws.  I have had occasion where they become loose from poor tapping
combined with expansion and contraction in the wood and they will make a
bit of a clicking/rattle noise when contacted by the balancier.  If they
are loose a tiny drop of thin CA at the base does the trick.   

David Love
davidlovepianos@earthlink.net


> [Original Message]
> From: David M. Porritt <dm.porritt@verizon.net>
> To: <pianotech@ptg.org>
> Date: 11/20/2003 6:39:50 AM
> Subject: RE: Yamaha mystery noise
>
> Check the key leads or even the leads in the damper underlevers.
>
> dave
>
>
> __________________________________________
> David M. Porritt, RPT
> Meadows School of the Arts
> Southern Methodist University
> Dallas, TX 75275
>
>
> ----- Original message ---------------------------------------->
> From: Dave Doremus <algiers_piano@bellsouth.net>
> To: Pianotech <pianotech@ptg.org>
> Received: Thu, 20 Nov 2003 08:01:17 -0600
> Subject: Yamaha mystery noise
>
> >Hey all,
>
> >  I have a nagging noise in the action of a two year old C2, somewhere 
> >between a click and a rattle,  the quality of teflon bushing noise 
> >but repeating a bit. If that makes any sense at all. Or possibly it 
> >sounds like a little mini golf pencil in exactly the wrong spot on 
> >the key where it can bounce off the capstan but not hit its 
> >neighbors. It appears on F#3 and a little on F3 and A3, nowhere else. 
> >I have repinned, reglued hammer heads, tightened screws until I'm 
> >blue in the face, even checked leg bolt washers, damper and sostenuto 
> >screws and key leads. Any ideas no matter how bizarre or obvious 
> >would be appreciated.
> >-- 
> >----Dave
>
>
> >-----------------------------
> >Dave Doremus, RPT
> >New Orleans
> >------------------------------
> >_______________________________________________
> >pianotech list info: https://www.moypiano.com/resources/#archives
>
>
> _______________________________________________
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