Piano Clinic - Press piano keys once but sound twice

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Press piano keys once but sound twice

Printed From: Singapore Piano Shop & Music Book Online Shop
Category: Piano Forum
Forum Name: Piano Clinic
Forum Description: Piano Tuning and technical-related issues. Popular topics include problems of Steinway, YAMAHA, KAWAI...
URL: https://www.pianoshop.sg/forum/forum_posts.asp?TID=62
Printed Date: 17 May 2024 at 1:29pm
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Topic: Press piano keys once but sound twice

Posted By: Huiying
Subject: Press piano keys once but sound twice
Date Posted: 09 Oct 2018 at 11:27pm

I have A YAMAHA U1 piano, used about 10 years. Since last week, I found some keys sound very strange, when I pressed and held the key, the sound came out twice like I played two times, but I just pressed and held the key, why? And I noticed one G# sound like blocked, anything wrong with my piano?

Replies:

Posted By: StevenKoh
Date Posted: 09 Oct 2018 at 11:45pm

When we press and hold the key, the hammer will hit the string first and then bounce back to a fixed position.

The action of your piano got problem, it make the hammers keep shaking after bouncing, which will hit the string twice or more, or cause the hammer hitting and leaning on the string to generate a blocked tone.

To solve this problem, your piano need regulation service.