So I bought a Casio Privia PX-150 off one of my buddies a couple years back. One of the best purchases I’ve made with music equipment, except recently it’s started having problems. When I’m holding the sustain pedal, or when I am sustaining the keys above E5, The right speaker starts shooting out a popping/knocking noise. It even happens when I’m wearing earphones. I’ve seen a few people on YouTube have had the same problem, but I cannot find the solution anywhere. I’m trying to repair it myself but having trouble diagnosing a problem.
