I have a 501 with the same problem, it only plays 4 notes at a time, the funniest thing is that if you keep hitting the same key several times, one time it plays, another time it doesn't... the only way to make chords with 4 notes, and leave it with accompaniment, which is muted, then on the right side you can make the 4-note chords. (the battery works normally at this point)
A 701 appeared, is it worth buying even with the 501? is it the same sound? I notice that my 501 has a digital display and the 701 has nothing... it just seems to have buttons on the chassis.
greetings from Brazil.
OBS AO NETO (EM PORTUGUES JÁ QUE ELE É DO BRASIL)
O meu quando liguei a primeira vez queimou o mesmo capacitor, foi uma fumaçeira pra tudo que é lado