<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 14 (filtered medium)"><style></style></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1>Dave,<o:p></o:p><o:p> </o:p>Yes, call Yamaha to discuss this.  But first, make a few observations.  Since there are multiple pianos, you can compare them to see if there is any difference.  It would also be helpful to know where they are breaking – at the tuning pin?  At the V-bar?  At the bridge?<o:p></o:p><o:p> </o:p>- Look at the string locator pins on the V-bar, and see if they are drilled correctly directly on the V-bar, or if they are a little high or low.  A compound bend at this point caused by a misalignment could be an issue at this point.<o:p></o:p>- Look at the string as it comes off the tuning pin, as Susan mentioned.  I haven’t heard of this problem on recent models, but check to see if there is any overlap of the coil as the string comes away from the pin.  It could be that the pins are driven in a little too deep, so the angle is bad.  Replacing the pins with longer ones can solve this problem.<o:p></o:p><o:p> </o:p>If they are breaking at the bridge, it is most likely abusive playing.  It could be that this is the favorite practice room of someone working on their black belt in music, and that they like to rock out with the pedal mashed down. <o:p></o:p><o:p> </o:p>Don Mannino<o:p></o:p><o:p> </o:p><a name="_MailEndCompose"><o:p> </o:p></a>From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On Behalf Of Dave Bunch Sent: Monday, February 18, 2013 9:49 AM To: pianotech@ptg.org Subject: [pianotech] P-22 Bass Strings<o:p></o:p><o:p> </o:p>I tune for a school that has eight Yamaha P-22s, all about five to ten years old. One of them (ser # 0023376) has been throwing bass strings. Six so far. At first I cautioned them about heavy handed playing but I know now this is not the problem after breaking the sixth myself during tuning, only raising the pitch a couple of cents. None of the others have broken strings and they all get played an equal amount. This is the first time I have seen this on a fairly new P-22. Has anyone else run into this? Is it actually possible they put the wrong strings on this piano? I'm thinking this might be a warranty issue since I see no other solution than to restring the bass. Any opinions? Dave Bunch<o:p></o:p></div></body></html>