Yamaha np 32 some keys faint in response - Yamaha Music

This is normally caused by dirty or worn contacts.
Simply open up the keyboard and replace the contact rubbers when the sensitivity has been lost.

There are 4 different rubber contacts depending on which notes are not working

WJ231101 RUBBER CONTACT 16N-2M OCT 2M-55
WJ231200 RUBBER CONTACT 16N-2M OCT 2M-45
WJ231301 RUBBER CONTACT 16N-2M 76H 2M-45
WJ231401 RUBBER CONTACT 16N-2M 76L 2M-55