<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv=Content-Type content="text/html; charset=us-ascii"> <meta name=Generator content="Microsoft Word 12 (filtered medium)"> <style>  </style>  </head> <body lang=EN-US link=blue vlink=blue> <div class=Section1> Hi Mathew:<o:p></o:p> <o:p> </o:p> If someone has not already mentioned this, here goes:  When you go back to the piano, start by tightening every case screw you can find.   (They can probably stand to be tightened anyway). Then start listening.  If the noise is no longer there, then something you did took care of it.  What?  Doesn’t matter – it’s fixed.  If the noise is still there, at least you know it is not all of the above.  <o:p></o:p> <o:p> </o:p> Also, soundboard button screws, treble trim screws and  damper guide rail screws.  Take a strong light and inspect every glue joint in the soundboard, particularly around the perimeter and at the belly rail.  Use a small mirror with the light if needed.  Remove the action and inspect the glue joints of the belly rail and soundboard interface and below.  Check to see if the pinblock is sitting fully on the rim shelf at the ends.  Check and see if it is unglued from the stretcher if it was fully fitted.<o:p></o:p> <o:p> </o:p> Hope this helps, along with all the other suggestions.<o:p></o:p> <o:p> </o:p> Will Truitt<o:p></o:p> <o:p> </o:p> <div> <div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'> From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On Behalf Of tom Sent: Tuesday, June 17, 2008 7:06 AM To: 'Pianotech List' Subject: RE: Vibrations<o:p></o:p> </div> </div> <o:p> </o:p> <o:p> </o:p> <o:p> </o:p> <div> <o:p> </o:p> </div> Subject: Vibrations<o:p></o:p> <div id="AOLMsgPart_2_4e8d6f0a-5b8c-46a1-afb3-188c90985c41"> <div> Can some of you, based on your experiences, provide me with areas to begin looking for vibrations of certain notes?  The problem is not buzzing because of loose ribs.  I have a client with a Baldwin grand, and she said there are vibrations on only a few notes, and I want to begin troubleshooting.<o:p></o:p> </div> <div>  <o:p></o:p> </div> <div> So, any ideas on where to begin looking would be appreciated.<o:p></o:p> </div> <div>  <o:p></o:p> </div> <div> Thanks so much,<o:p></o:p> </div> <div> Matthew           <o:p></o:p>             <o:p></o:p> Matthew,<o:p></o:p>             Good suggestions have been made so far. <o:p></o:p>             I’ll paraphrase the great Yogi Berra here. (Even though he is a N.Y. Yankee)<o:p></o:p>             “You can observe a lot by looking (listening)”<o:p></o:p>             <o:p></o:p> It can sometime help to have the owner play the note(s) whilst you climb over under and around this thing. Touch – push – grab everything including stuff on the wall. <o:p></o:p> One client was remodeling and put an old metal medicine cabinet on the floor 10 feet from the piano. At the piano the noise WAS coming from the piano (Bosendorfer) .I stood away while she played and the noise came from behind me (the cabinet) <o:p></o:p>             <o:p></o:p>             Don’t take any case parts off at first. Hear the buzz then remove on part at a time. <o:p></o:p>             Occasionally the noise will follow a case part and you’ll have it.<o:p></o:p>             <o:p></o:p>             Recently I had a noise from a top stick at rest rattling against the plate as an example of a case part noise.<o:p></o:p> <o:p> </o:p> Over the years one of the most vexing was on an old Chickering grand. Turned out to be the back action mounting blocks that were secured to the belly rail with screws and washers. One was just a little loose and you would have thought the soundboard was coming apart from this noise.<o:p></o:p> My point here is it could be a myriad of possibilities .Think of it as treasure hunt and by enlisting the owner they will have a real appreciation of your efforts and ultimately your expertise.<o:p></o:p>             <o:p></o:p> Tom Driscoll RPT<o:p></o:p> <o:p> </o:p> </div> </div> <o:p> </o:p> No virus found in this outgoing message. Checked by AVG. Version: 7.5.524 / Virus Database: 270.3.0/1505 - Release Date: 6/16/2008 7:20 AM<o:p></o:p> </div> </body> </html>