I've had a similar event...it was a screw on the keybed of a Kawai UST7...I think... David I. ----- Original message ----------------------------------------> From: Carl Teplitski <koko99@shaw.ca> To: Pianotech <pianotech@ptg.org> Received: Mon, 22 Nov 2004 14:41:55 -0600 Subject: Re: Mysterious Buzzing >Some time ago, the Yamaha teaching school owner in my area called and asked >me if I could look at a studio piano which the teachers had been complaining >about. >Apparently there was a buzz when some notes were played. I actually couldn't >reproduce >the effect, so the owner came in and finally made it buzz. Well, while he was >there, I tried >the normal chechs to isolate the noise, to no avail. When he left, I continued >and finally >decided that the problem had to be in the keybed. Started to take some keys out, >and spotted a womans hairpin laying in the keybed, in some dust and lint. Sure >enough, >when I held the pin tight, the noise stopped. I called the owner in to see this, >because >I think it's good for nontechnical people to see that these are problems which >can occur, >and can be very difficult to find, because most people don't appreciate the >situation. >Took all the keys out and vacummed. Problem solved, but for a couple of weeks he >brought it up whenever there was a problem of anykind. ( in jest, of course ). A >good man, >and appreciated what happened. >Carl / Winnipeg >Jim Kinnear wrote: >> Patrick >> Had the same annoying problem .. . eventually found a kid's glass marble, >> wedged between the soundboard and the rear bottom frame . . . only buzzed >> for Ab . . . >> took an hour to locate with the owner pounding the key and me crawling >> around on my hands and knees with my head in the piano at her feet . . >> wasn't a pretty picture . . >> >> I'm sure she wondered if I was some kind of nut . . . till I showed her the >> marble !! >> patience & persistance got a whole new meaning !! >> >> ------------------------------------------------------------------------- >> Jim Kinnear >> www.kinnearpiano.com >> Collingwood, ON, Canada >> >> The aim of an argument or discussion should not be victory, but progress >> -- Joseph Joubert (1754-1824) French Philosopher >> >> ----- Original Message ----- >> From: "Tom Driscoll" <tomtuner@comcast.net> >> To: "Pianotech" <pianotech@ptg.org> >> Sent: Saturday, November 20, 2004 7:07 PM >> Subject: Re: Mysterious Buzzing >> >> > >> > ----- Original Message ----- >> > From: "Patrick C. Poulson" <pcpoulso@pacbell.net> >> > Subject: Mysterious Buzzing >> > >> > >> > > Hello All: I need some help in tracing down a buzz in a Vose upright >> > piano. >> > > The buzz in question shows up while playing F5, whichi is two notes down >> > > from the strut. I have done all the usual tests and corrections that I >> > > usuall rely on, such as looking for cracks in the sound board, pressing >> on >> > > ribs in search of loose glue joints, reseating the strings, smoothing >> down >> > > the V-bar, cleaning up the notching, and cursing under my breath. We >> also >> > > vacuumed out the cabinet inside and out. Any ideas? Thanks, >> > > Patrick C. Poulson >> > > >> > >> > Patrick, >> > No , Can't help you. >> > >> > >> > >> > Seriously,We've all been there---What can help is to have someone >> > generate the buzz whilst you crawl up ,under,over ,behind and around this >> > thing.Locating where the buzz is loudest can be a good start.For example >> if >> > its louder at the top in front one would look to pressure bar etc as >> opposed >> > to louder behind the soundboard at the edge would direct you to the >> > soundboard-rim connection. >> > I'm not inferring that either of these is your problem ,but narrowing >> > down location is a good start. >> > If you can isolate this buzz to one unison and further to one string, >> > sometimes replacing the string can eliminate the buzz, >> > I know its not very conclusive as to the cause,but it will sometimes >> > work. >> > Tom Driscoll RPT >> > >> > >> > _______________________________________________ >> > pianotech list info: https://www.moypiano.com/resources/#archives >> >> _______________________________________________ >> pianotech list info: https://www.moypiano.com/resources/#archives >_______________________________________________ >pianotech list info: https://www.moypiano.com/resources/#archives
This PTG archive page provided courtesy of Moy Piano Service, LLC