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MMD
Tech
PPCo1
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Spring Fundraising Drive In Progress. Please visit our home page to see this and other announcements:
https://www.mmdigest.com Thank you. --Jody
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by John A. Tuttle (030818 MMDigest) As many of you know, Player Piano Co. has been producing a vacuum pump kit for player pianos for many years. In the early years of production, PPCo used American-made parts. However, back around 1997, RCA stopped making the diac and triac used in the controller. Subsequently, the parts came from Taiwan, Hong Kong and Mexico, and the failure rate increased dramatically. For those who have systems that were made after 1997 that have stopped working, I have finally located the schematic for the controller. I've sent the schematic to MMD and hopefully it will be put into the Technical Section at the MMD web site. Suitable replacement parts are available from Radio Shack. I have also stored the schematic at Player-Care. See: http://www.player-care.com/gifs/cont653a.jpg Musically,
19 Auguest 2003 |
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CONTACT FORM: Click HERE to write to the editor, or to post a message about Mechanical Musical Instruments to the MMD Unless otherwise noted, all opinions are those of the individual authors and may not represent those of the editors. Compilation copyright 1995-2025 by Jody Kravitz. Please read our Republication Policy before copying information from or creating links to this web site. Click HERE to contact the webmaster regarding problems with the website. |
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