On Mon, Feb 14, 2011 at 8:26 PM, Dave Bunch <davebpiano at gmail.com> wrote: > A couple of weeks ago I serviced a new Yamaha P22 at a school I tune for, > the vocal teacher having complained of many sticky keys. And she was right. > Probably a half dozen were not returning at all and the rest all had excess > friction to varying degrees. There was tightness at the front rail bushings > as well as the balance rail, so I eased every bushing and applied ProTec to > all key pins. Also checked the action centers and found no excess friction > there. Then I checked and double checked all keys with the sustain engaged > and releasing the keys slowly. I wanted to be thorough since this school is > an hour away. I get a call today that just two days after I worked on this > piano, the keys were sticking again, just as bad as before! I can't hardly > believe it but I'm going to take her word for it. Has Yamaha changed > anything in their new pianos? Different bushing cloth our something? I am > probably going to have to eat this next service call so I want to get it > right. Am I missing something? > > Dave Bunch > With what did you ease the keys? CF tool, or pliers? Sometimes a pliers is necessary. One Yamaha M-500S had what you described. I eased the keys the first time with the soldering iron tool Pianotek sells. Very soon I got a callback that the sticking keys were back. After easing them with pliers, they have been OK since. I think that piano also had tight balance holes. -- JF -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20110214/cb59303c/attachment.htm>
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