Hi Peter,
Thank you so much for the suggestion! Today I disassembled the piano and got access to all the its parts.
I have to say I spent some time to press the pedal and try to find the part(s) which produces the sound. I would say I'm pretty confident that the sound comes from the dampers when they touch the strings all together. I'm a bit confused what I can do in this case now. Will try to look at all of this tomorrow but really don't know what I can find more.
If you have any idea about this it would help me a lot.
Thank you,
Dmitry
On 3 October 2016 at 17:30, 'Peter Phillips' eleced@... [disklavier] <disklavier@yahoogroups.com> wrote:
Pedal drop soundsDmitry, I have a Mk 4 C5 Pro, and the pedal noise was driving me mad. I complained to Yamaha, and a piano tech visited and confirmed the noise I was hearing was incorrect, so don't let them tell you the noise is normal. The problem was solved very simply. If you take the piano action out, you will see the push rod from the pedal trap work connecting to the dampers. There is a felt washer between the two surfaces, and this washer has flattened to the point where it was no longer effective. We cut another washer from thin felt, and placed it on top of the other washer. Problem completely solved.Apparently the sound, though minor in itself, is amplified by the acoustics inside the piano. I had previously tried slowing the dampers by using Spencer Chase's proportional pedal software, but nothing was going to solve this problem other than a felt washer. Good luck with it, and you will be amazed at how silent the pedal can actually be.Peter Phillips (Sydney)