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I did a fairly comprehensive restoration of a Kastner Autopiano over 3 years ago which I then sold. The new owner now has a problem and I'm hoping that someone on the forum can give me a few pointers and jog my memory as to what may have happened so I can relay this to the owner.
Apparently it was working fine but then not used for a year due to being inaccessible whilst the room it was in was renovated. When attempting to play it again he said that when a roll is loaded and the pedals pressed that the mechanism operates but the piano is completely silent so I assume there is no suction supply to the tracker bar. Oddly, he also notes that when the 'silent' button is pressed he notices a slight increase in pressure / effort on the pedals (?)
He says that all the tubes and leather nuts appear to be in place. Can anyone familiar with Autopianos suggest what might be wrong please ? Or, is there anyone who lives in the Stoke-on-Trent area who would be willing to have a look at it for him please ?
Than you for any responses.