This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment Hello, You could use a big screwdriver or a hard wood dowel as a stethoscope to check more precisely where the sound is produced. I believe you can find cheap stethoscopes for automotive work. Or call a doctor, they have a real one generally, but ask you to say "33", the piano may not be able to do that. Aspirin and go to bed early Isaac -----Message d'origine----- De : owner-pianotech@ptg.org [mailto:owner-pianotech@ptg.org]De la part de SUSAN P SWEARINGEN Envoyé : dimanche 8 septembre 2002 01:39 À : pianotech@ptg.org Objet : Re: Sound coming from the plate The reason I think it's the plate is that when I have the piano open and put my ear right next to the plate and play a note, my ear is hearing it coming directly from the plate itself. In addition, it has a kind of metalic timber to it. I'm going to try and press a piece of felt above the pressure bar, like was mentioned in the previous post, and see if that helps. ----- Original Message ----- From: Alan R. Barnard To: pianotech@ptg.org Sent: Saturday, September 07, 2002 5:23 PM Subject: Re: Sound coming from the plate Had the same "sound" in a Wurlitzer upright ... buzzed mostly when I played A4. Turned out to be the lock for the lid ... only made the noise when it was opened for tuning ... taped it while tuning. Point: Are you sure it's the plate? I read about a tuner that went nuts looking for an out-of-tune resonant buzz in a piano ... finally found it was a loose piece of glass in a leaded glass window near the piano! Alan Barnard Salem, MO ----- Original Message ----- From: SUSAN P SWEARINGEN To: pianotech@ptg.org Sent: Saturday, September 07, 2002 3:57 PM Subject: Sound coming from the plate Hi Everyone. Has anyone ever encountered this before? I have a client with an M1F from Yamaha. It's only a few years old but already, Yamaha has discontinued the line. It's a 43 " upright and it has one of those crazy lids that lift up like a grand piano. Anyway, I noticed that after I strike a key anywhere in the treble, I get a metalic sound that is not in tune with the note struck. It was obvious to me that the sound I was hearing was the iron plate vibrating for a short time after the note was struck. However, as I mentioned, it was a terrible out-of-tune noise. It's not extremely obvious but it is loud enough that it drives the owner crazy. The plate screws are all tight, as is every other screw I could find. I wonder if this was why this series was discontinued. Anyone ever run into a similar problem? Corte Swearingen ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/bb/b8/da/2d/attachment.htm ---------------------- multipart/alternative attachment--
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