To fix a stuck key on an upright piano, you can try the following steps.

[themaximillyan]

1 First, inspect the key to identify any visible issues such as rubbing against other keys or foreign objects stuck in the gap. If you find any, gently remove the obstruction or adjust the position of the keys to avoid rubbing.

2 If the issue lies with the pins of rotation (whippen or hammer), you may need to replace or repair them. This requires some technical knowledge and skills, so it might be best to consult a professional piano technician for assistance.

3 In case the springs of the whippen or jack are broken or lost, you can purchase replacement springs from a piano parts supplier. Follow the manufacturer's instructions to replace the broken springs.

4 If the butt spring of the hammer is broken or the tape is unfastened from the hammer flanges, you can try reattaching the tape or replacing the broken spring. Again, this might require professional help if you are unsure of the process.

5 If the hammer or the whippen is broken, it is recommended to contact a piano technician for repair or replacement. Attempting to fix these parts yourself can be challenging and may cause further damage. But you can try fix it.

6 The pins holding the keys in place may become loose or worn out over time, causing the keys to stick or not function properly.

7 Rubbish has entered the mechanical parts: coins, buttons, matches ... (you need to look for where it is).

8 The key is stuck tightly in the guide pin or balance pin there. This can be due to swelling, debris, key deformation, or a shift in the position of the guide pin (often the balance pin). Sometimes, since the production of the upright piano, the balance pin of the key has not been centered to the specified position, causing a slight offset. As a result, when a key is pressed, the balance pin gets wedged against the cloth edge of the key's hole cloth bush.

9 The hammer gets stuck due to poorly regulated felt mute there. Sticky materials like plasticine, chewing gum, wax, etc., get on the keys.

10 Small objects get lodged in the gaps between the keys. If the humidity in the room is very high, then the keys may swell and rub against each other. In this movie, Max explains what to do if the balance pin of an upright piano, which has edges, is slightly offset and does not fully place down into the felt bush of the key when it is pressed. The key becomes wedged and does not return to its original position after release. To fix this, you need to use pliers with long and narrow jaws to move the pin to the standard position in one motion. There is no need to be afraid to do this, as the pin is securely fixed in the wooden keypad with a thread. Rotating the pin will result in the key becoming unstuck.

In this movie, Max explains what to do if the balance pin of an upright piano, which has edges, is slightly offset and does not fully place down into the felt bush of the key when it is pressed. The key becomes wedged and does not return to its original position after release. To fix this, you need to use pliers with long and narrow jaws to move the pin to the standard position in one motion. There is no need to be afraid to do this, as the pin is securely fixed in the wooden keypad with a thread. Rotating the pin will result in the key becoming unstuck.