I had a similar problem with a Knight upright some years ago. There was a horrible buzz which was very difficult to isolate. Finally, after feeling around on the soundboard I found a small area where the lightest pressure would change the buzz and only slightly more stopped it. The board was, in fact, delaminating. I was able to isolate a small area that seemed to be the source. I drove a couple of screws with soundboard buttons into the board to try and clamp the offending area down. Not pretty, but it has worked thus far. David Love >From: Susan Kline <sckline@home.com> >Reply-To: pianotech@ptg.org >To: pianotech@ptg.org >Subject: Re: Buzz Problem >Date: Thu, 28 Jun 2001 19:34:06 -0700 > > >> >>My judgement is that I am looking at a solid core faced with a veneer on >>both >>sides, and that the veneer is lifting somewhere near the nose bolt in the >>bass. I've checked and checked the bridges for rubbing against the plate, >>and there seems to be clearance everywhere. >> >>Thanks for the reply >> >>Bill Maxim > >Hello, Bill > >I wonder what would happen if you managed to work a small clamp through >the nosebolt hole, and tightened it so it pressed the layers together. >I mean, what's a little extra impedance among friends? > >Well, sort of crazy ... but sometimes for nearly terminal terribly >cracked and loose upright soundboards, not worthy of true repairs, I >get the noises to quiet down by wedging scrap hammer felt between >a backpost and a rib. For that matter, you could try that, if it is >time to go home and nothing better has presented itself. > >If one can lay a hand on a certain area, and the sound goes away, >it sometimes makes me wonder if I can find an artificial semi-permanent >"hand" which could do the same thing while I walked out to the car >and drove away. > >Susan > > _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com
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