crwdns2934241:0crwdne2934241:0 jokersina43

crwdns2934249:0crwdne2934249:0:

Can you use spirit to clean the rubber contact or the circuit board....I also use Yamaha psr e423 and some keys seized to sound and I realized the problem is from either the rubber or the circuit board.. I need help please.

crwdns2915684:0crwdne2915684:0:

open