CASIO CDP-230R 故障排除

Was playing & keyboard cut out.power off ..so turned back on & won't stay on .it lights up & stays on while finger still on power button but soon as i take of it shuts off .while this happens no sound even pressing keys .. any thoughts ?

Cdp 230r light in the window comes on when the button is pushed but no sound from the keys take your finger off and the light goes off

I had it sitting away in my cupboard for no longer than 2 weeks, pulled it out to play today and won’t even turn on

had sitting alone in computer room for 3 months and just powered on and everything lights up and looks fine, but no indication that keys are being pressed and no sound and none of the option buttons does anything.  There are not headphones plugged in.

My Casio CDP 235R will not produce any sound. The piano is reset to the factory settings per instructions in the manual. Still no sound. When the keys are pressed, the display shows the keys that were depressed. None of the special keys work either. The display is lit and reflect the knobs being used. There is no head phones used. The only two cords plugged in the back side were the same two cords that were there when there was sound. The two chords were the power cord and the cord to the sustain pedal.

This piano is not used very often - maybe 5 times a month. It had not had any problems until now. Can anyone shed any light to this lack of sound issue? Thank you in advance. Lyn Herbert