Hi,
I need help! I bought a digital piano a few weeks ago. Suddenly, the bottom of ALL the keys looked like they have been stained. I have no idea why! I have been keeping it in good condition, closing the cover after playing.
Any help from experts out there?
Here is a pic.. sorry the image quality may not be very good. But as you see, there are stains on they key. It is more obvious in reality and it is affecting all the piano keys.. not just the ones shown.
I need help! I bought a digital piano a few weeks ago. Suddenly, the bottom of ALL the keys looked like they have been stained. I have no idea why! I have been keeping it in good condition, closing the cover after playing.
Any help from experts out there?

Here is a pic.. sorry the image quality may not be very good. But as you see, there are stains on they key. It is more obvious in reality and it is affecting all the piano keys.. not just the ones shown.
