rivorade

Thank you guys for your help and advice! As I've noticed there is no separate jack for sustain pedal so probably I can't use your idea Jokeyman123 . I hope this dedicated pedal input switching on and off would help for a long term. Best regards!

Thanks for answer and help. It happens with different sounds and with different modes (solo, accomp on). It happenned with sustain pedal connected, cause that's the way how to assemble piano they said in the manual. Now I've done as you said: disconnected pedal, turned the instrument on and then connected pedal. I've played couple of minutes and it seems like the problem disappeared! If it's so simple how come the Casio support couldn't give me your advise? Should I do it every time I turn the instrument on, though it would be strange? Thank you very much for your help!

Hi,This is my first post so welcome everybody. Recently I've bought PX-780 for my son. Soon I've discovered strange and very annoying issue. For no reason, without pressing pedal or any function keys suddenly the sustain is on. Sometimes it happens after few whiles of playing or just after playing few notes. Sometimes it doesn't happen. And it's really hard to turn off. Obviously it makes playing very unpleasant and hard, it's just not fun it should be. Of course I've made reset view times but it didn't help. When I've asked Casio support they only told me to send instrument to service. I understand that, but it's not a pair of shoes and idea of dismantling it, protecting, packing and sending makes me sick. So if anybody have some ideas i would really appreciate this.