Good afternoon, I have a little problem (one) with my piano. I finally managed to bring home a 1988 Pertrof 125 with Renner action. The general condition is almost good. It was tuned after the move, but no regulation has been carried out. Last night, calmly, I started studying the keyboard response and noticed that when I try to play softly, some (not all) of the hammers generate "false repetitions"....that is, they strike the strings twice instead of once. On forte I have no problems....and the pianissimo is practically impossible to play. It will certainly need to be carefully regulated....so here the question arises: - Can I try on a single key by myself to see if the situation improves???
I am intervening to propose checking the depth, which should be insufficient. First, check the hammer-string distance. Then the escapement point and subsequently, if the hammer bounces, increase the depth. It is true that by moving the escapement point back the problem might be resolved, but it becomes more difficult to achieve the piano and pianissimo. Even the forte becomes less powerful.
Eh sì, quando il verticale ribatte può essere dovuto anche allo sfondo scarso. Il verticale poi è anche soggetto di natura a questo genere di problema...
Se non funziona il colpetto allo scappamento deve controllare un pó tutto...
Thank you very much for the answers. I will try to research more to perform the indicated tests. I followed the video course by Mr. Paolo Ferrareli (thank you for the fantastic video made available to everyone). I am a complete layman, so when you talk to me about escapement let-off, unfortunately, I don't know which one it is. I will try calmly and if I manage to "rectify" at least one key, I will call an expert to do all the work. Could you give me an approximate idea of what kind of expense I am looking at?? Thanks again.
Everyone is worried about the price, but you have to understand that you are putting people in a difficult position with these questions because without having inspected the instrument, it is difficult to say what needs to be done; when you get your hands into the mechanics, unexpected issues can arise.
Dlet's say that if the regulation intervention is routine, with a healthy piano, a technician can manage it in even half a full day, as if they were going to do a tuning for the first time.
How much it costs depends on how one values their work; it can cost 100 euros or 300 euros, it depends. Certainly not a crazy amount.
Giovanni, thank you for the answer; even an indication between 100 and 300 is a lot for me. 700 € is one thing, 300 € is another. Obviously, if the technician opens the piano and finds a nest of dead mice, things change... but indicatively, I think the figures (especially 300 €) that you indicated are very close to reality. I only asked for an indication, being a layman. Thanks again.
