Piano strings without strings are broken, and no strings vibrate to make sound, so playing strings naturally cannot make sound.
Treatment suggestion: replace the same type of strings. (Piano tuning skills are required)
When the external key is pressed, the end of the key is lifted to push the strings, thereby transmitting power to the hammer. If the connecting rod of the string is broken and not reset, the screw is too loose, the process of transmitting power is blocked, and the hammer cannot be pushed, which will also cause the keys to be silent.
Disposal: Check and arrange the string striking machine. (Piano tuning skills are required)
The serious deformation of the percussion machine will lead to piano leakage, continuous alternation of temperature difference, frequent changes of environment and gradual deformation of wood. When the deformation reaches a certain degree, the percussion machine is not in a straight line with the hammer and the keys, or it is beyond the interconnection range, resulting in the silence of the keys.
Disposal: Replace deformed parts. (Piano tuning skills are required)
Foreign objects prevent the strings from being attached by foreign objects, or the parts where the hammer hits the strings are blocked by foreign objects, so that the strings cannot vibrate or the hammer cannot touch the strings, so it is not played.
Treatment suggestion: If foreign bodies are found, clean them up. (Less likely)