Emax

Hello, I still having a crackling\pulsating sound on my Emu emax SE 
keyboard, Im thinking its the output connector, i opened the keyboard 
up and took out a hairball full of dust\hair out heh ,.. the ribbion 
is clipped and it looks like some previous owner had it serviced, it 
also
Revision C

Im in the boston,Ma area also (saugus)

thanks for any help.