It seems that when the note is played, the tip of the jack oesn't protrude through the slot in the repetition lever as much as for the ther keys. I guess the tip of the jack has to stick through the slot a certain mount to engage the hammer knuckle, in order to thrust the hammer towards the tring, and it is just on the point of not being far through enough. Robert This is where the problem lies. The reason the note is not repeating is because the jack is not coming back under the knuckle. The top of the jack needs to be 1/32" BELOW the top of the repetition lever. Willem (Wim) Blees, RPT Piano Tuner/Technician 94-505 Kealakaa Str. Mililani, Oahu, HI 96789 808-349-2943 www.Bleespiano.com Author of: The Business of Piano Tuning available from Potter Press www.pianotuning.com -----Original Message----- From: rsfinley at charter.net To: pianotech at ptg.org Sent: Sat, Feb 13, 2010 8:58 am Subject: [pianotech] Advice about intermittent note on Yamaha grand I have been having a problem with one of the keys, C6, on my Yamaha baby grand iano. The note sometmes sounds and sometimes doesn't. If I play the note epeatedly, quickly, it sometimes stops sounding. If I give it a rest and then lay it, it usually sounds again. When it stops sounding, the hammer is not ropelled as far as the string. I took the action out to inspect it and to compare it with the action of the urrounding keys. It seems that when the note is played, the tip of the jack oesn't protrude through the slot in the repetition lever as much as for the ther keys. I guess the tip of the jack has to stick through the slot a certain mount to engage the hammer knuckle, in order to thrust the hammer towards the tring, and it is just on the point of not being far through enough. Please could you suggest what the solution might be? If I turn the Letoff egulating screw so that the letoff button is lower, I think it might cause the ip of the jack to stick through the slot in the repetition a a little further ecause the jack toe will engage the letoff button punching across a shorter istance than before, making it more certain that the note will sound. Would his be the correct thing to adjust or is there another alternative? (I didn't xamine the knuckle to see if it is worn or if there is a deep groove in it. It eemed to be OK) Thank you very much for your help. Robert Finley -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20100213/9ce1d22f/attachment.htm>
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