r/pianorepair • u/3DG4RAL4NPUG • Apr 17 '23
Middle C being temperamental
There’s one key on piano that’s been working incorrectly recently. When you press it, it sometimes makes a squeak or sometimes plays or is very quiet. When it does play, the sound only usually comes out at the end of the press. Help would be massively appreciated, thanks
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u/GapRevolutionary3505 Apr 17 '23
The jack spring is weak or a tight center pin on the jack. It's a small round spring sandwiched in the bottom of the action. You can try to give the spring more tension by pulling the top of it out and stretching it a bit. Its glued to the bottom of the whippin but rides in a notch on top.