Technical problems and their resolution

Noise while playing and bouncing hammers

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Started by

DanieleRossi

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Opening post by DanieleRossi

Posts
3
City
Roma

Hello everyone,

as indicated in my introduction, I do not play the piano, but I really like listening to it being played.

We recently purchased a Yamaha U1 refurbished by Yamaha for our home and during use, at least in my opinion, a strange noise can be perceived that bothers me.

The noise seems to come from the hammers bouncing.

To help you understand exactly what I am talking about, I have made a couple of videos; obviously, I am not playing, but I have only pressed the keys to highlight the noise.

Video 1

Video 2

In case everything is normal, I apologize in advance ๐Ÿ™‚ otherwise, I will drop by the seller as soon as possible.

Thank you and have a good day,

Daniele

Video 1

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Reply 2 by pianoexpert

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3,876
City
rocca di papa

let's say that the "key thud" is too evident. The hammer rest felt could be excessively hard, and the heel felts of the dampers might be glued too much (even in the center). They need to be examined and potentially replaced. The damper heel carries a felt that contacts the brass pilot and cushions the blow; for this reason, it must only be glued to the sides of the heel, leaving a glue-free zone in the center which would otherwise harden the felt itself. The green hammer rest felt also seems a bit stiff to me.

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Reply 3 by DanieleRossi

Posts
3
City
Roma
pianoexpert wrote:

43 minutes ago, pianoexpert said:

let's say that the "key thud" is too evident. The hammer rest felt could be excessively hard and the heel felts of the dampers might be glued too much (even in the center). They need to be examined and potentially replaced. The damper heel brings a felt into contact with the brass pilot that cushions the blow, and for this reason, it must only be glued to the sides of the heel, leaving a glue-free zone in the center which would otherwise harden the felt itself. The green hammer rest felt also seems a bit stiff to me.

Thank you very much for the answer.

I have contacted the shop where I purchased the piano and the technician should be coming by next week.

thanks again and I will update you.

Daniele

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