Digital Piano Touch Sensitivity lost

[Sebendun]

Hey, I own the "Thomann DP-50" Digital Piano for several years now and since a few time some keys have lost their touch sensitivity.

So some keys play very loud sometimes no matter how hard I press it.
And many keys just don't play when I press them.

Does anyone now how I can fix this?

 

[happyrat1]

The keyboard contact strips need to be stripped and cleaned.

Gary

 

[Harrison]

maybe open the back body and clean the conductive adhesive will be a great way to fix the problem.