When ever we try to play the paino the out pout of instrument is not as same its dead or other instruments are mixed.

After opening the PIANO we could not figure out what the issue is ? is it with software or hardware ?

Can you guideme

 

Below attach are pictures

 

When ever we try to play the paino the out pout of instrument is not as same its dead or other instruments are mixed.

Can you try again to describe the problem? I cannot make sense of what you said.

 

Below attach is link

 

No idea what that was supposed to demonstrate.