94.3% David Ilvedson, RPT Pacifica, CA 94044 ----- Original message ---------------------------------------- From: <rsfinley at charter.net> To: pianotech at ptg.org Received: 2/15/2010 10:17:39 AM Subject: [pianotech] Solution Found to Yamaha C6 Intermittent Key Problem >A friend of mine from the Boston Chapter of the PTG came over this morning and >diagnosed and corrected the problem with the C6 key on my Yamaha piano. This was >the problem I described in earlier emails when the note played intermittently and >stopped sounding during fast repetitions. >We took the whippen assembly out for C6 and found that the jack was not moving >freely enough due to the pin in the hole being too tight. He removed the center pin, >reamed and burnished the holes slightly and installed a new pin. He also found that >the repetition lever spring was too weak and bent it slightly to increase the tension. >He demonstrated the tools that are used and the necessary technique. This >corrected the problem and the note can now be repeated quickly. Small adjustments >were made to the letoff, hammer blow distance, hammer drop and hammer lift height >etc. >My friend made a list of tools I need to get in order to make similar repairs if >necessary in the future. I am very grateful for his help on this, and for the clear >explanations, demonstrations and advice, and thank him very much for being such a >good mentor. >Robert Finley
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